MX Bike Kits – Advanced Machining Services

MX Bike Kits

Advanced Machining Services > MX Bike Kits

MX Bike Kits

Listed below are our more popular MX bike kits.

 

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Give us a call and we can custom tailor a kit to fit your needs. We can work with your budget, too!

  • MX

CR80

CR80 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR80 Hi-Performance Nikasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR125

CR125 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR125 Nikasil Top End Kit 

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR125 Hi-Performance Top End Kit 

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR125 Nikasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR250R

CR250R Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR250 Bore Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR250 Nikasil Top End Kit

  • Nicasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR250 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CR250 Hi-Performance Nikasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

Power Valve Service

Modern 2-strokes have a power valve feature, which at low rpms, configures your exhaust port to give you maximum torque, and at high rpms it gives you maximum horsepower… the best of both worlds! Our service covers these components and assures proper piston to power valve clearance. Your cylinder will be shipped to you with the power valve assembled. Just wipe down the gasket surfaces with a clean cloth and your ready to assemble.

CRF250R

CRF250 Cylinder Kits

CRF250R Cylinder Kit

  • Hone cylinder
  • Wiseco piston kit
  • 12.9:1 compression
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER NOT INCLUDED

CRF250 Nikasil Cylinder Kit 

  • Nikasil cylinder
  • Wiseco piston kit
  • 12.9:1 compression
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER NOT INCLUDED

CRF250 Big Bore Cylinder Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER NOT INCLUDED

CRF250 Head Kits

CRF250 Head Kit

  • Multi-angle valve job
  • 4 stock replacement OEM valves
  • New OEM valve springs
  • Valve guides checked
  • New valve stem seals
  • valve lash set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CRF250 Head Kit Stage 1

  • Stage I porting
  • Stage I Hotcam
  • 4 Kibblewhite valves
  • Spring Kit
  • Multi-angle valve job
  • Valve guides checked
  • New valve stem seals
  • valve lash set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CRF250 Head Kit Stage II

  • Stage II porting
  • Stage II Hotcam
  • 4 Kibblewhite Valves
  • Spring Kit
  • Multi-angle valve job
  • Valve guides checked
  • New valve stem seals
  • Valve lash set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CRF250 Top End Kits

CRF250 Top END Kit Stage I

  • Stage I porting
  • Stage I Hotcam
  • Wiseco Piston kit
  • 12.9:1 compression
  • Hone cylinder
  • 4 Kibblewhite valves
  • Spring Kit
  • Top end gasket set
  • Multi-angle valve job
  • Valve guides checked
  • Valve lash set
  • New valve stem seals
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CRF250 Top END Kit Stage II

  • Stage II porting
  • Stage II Hotcam
  • Wiseco Piston kit
  • 12.9:1 compression
  • Hone cylinder
  • 4 Kibblewhite valves
  • Spring Kit
  • Top end gasket set
  • Multi-angle valve job
  • Valve guides checked
  • Valve lash set
  • New valve stem seals
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CRF450R

CRF450 Cylinder Kits

CRF450 Cylinder Kit

  • Hone cylinder
  • Wiseco Piston kit
  • JE & CP available
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER NOT INCLUDED

Compression Ratio

11.5:1
12.0:1
12.5:1
13.0:1

CRF450 Nikasil Cylinder Kit

  • Nikasil cylinder
  • Wiseco Piston kit
  • JE & CP available
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER NOT INCLUDED

Compression Ratio

11.5:1
12.0:1
12.5:1
13.0:1

CRF450 Big Bore 490 Cylinder Kit 

  • Athena Nikasil cylinder
  • Athena Piston kit
  • Top end gasket set
  • +4mm 100mm bore
  • Gasket surfaces prepped
  • Compression Ratio of your choice
  • CYLINDER INCLUDED

CRF450 Head Kits

CRF450 Stock Head Kit

  • Multi-angle valve job
  • 4 replacement OEM valves
  • New valve springs
  • Valve guides checked
  • New valve stem seals
  • Gasket surfaces prepped
  • HEAD NOT INCLUDED

CRF450 Hi-Performance Head Kit Stage I

  • Stage I porting
  • Stage I Hotcam
  • 4 Kibblewhite valves
  • Spring kit
  • Multi-angle valve job
  • Valve guides checked
  • New valve stem seals
  • Gasket surfaces prepped
  • HEAD NOT INCLUDED

CRF450 Hi-Performance Head Kit Stage II

  • Stage II porting
  • Stage II Hotcam
  • 4 Kibblewhite valves
  • Spring kit
  • Multi-angle valve job
  • Valve guides checked
  • New valve stem seals
  • Gasket surfaces prepped
  • HEAD NOT INCLUDED

CRF450 Top End Kits

CRF450 Top End Kit Stage I

  • Hone cylinder
  • Wiseco Piston kit
  • JE & CP available
  • Stage I porting
  • Stage I Hotcam
  • 4 Kibblewhite valves
  • Spring kit
  • Top end gasket set
  • Multi-angle valve job
  • New valve stem seals
  • Valve guides checked
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

CRF450 Top End Kit Stage II

  • Wiseco Piston kit
  • JE & CP available
  • Stage II porting
  • Stage II Hotcam
  • 4 Kibblewhite valves
  • Spring kit
  • Top end gasket set
  • Multi-angle valve job
  • New valve stem seals
  • Valve guides checked
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX80

KX80 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX80 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX80 Nikasil Top End Kit

  • Nicasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX80 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX100

KX100 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX100 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX100 Nikasil Top End Kit

  • Nicasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX100 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX125

KX125 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX125 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX125 Nikasil Top End Kit

  • Nicasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX125 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

2 Stroke Hi-Performance Nikasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

Power Valve Service

Modern 2-strokes have a power valve feature, which at low rpms, configures your exhaust port to give you maximum torque, and at high rpms it gives you maximum horsepower… the best of both worlds! Our service covers these components and assures proper piston to power valve clearance. Your cylinder will be shipped to you with the power valve assembled. Just wipe down the gasket surfaces with a clean cloth and your ready to assemble.

KX250

KX250 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX250 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX250 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX250 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX250 Hi-Performance Nicasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

Power Valve Service

Modern 2-strokes have a power valve feature, which at low rpms, configures your exhaust port to give you maximum torque, and at high rpms it gives you maximum horsepower… the best of both worlds! Our service covers these components and assures proper piston to power valve clearance. Your cylinder will be shipped to you with the power valve assembled. Just wipe down the gasket surfaces with a clean cloth and your ready to assemble.

KLX400

KLX400 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KLX400 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KLX400 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KLX400 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX500

KX500 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX500 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX500 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

KX500 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM80

RM80 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM80 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM80 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM125

RM125 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM125 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM125 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM125 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM125 Hi-Performance Nikasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

Power Valve Service

Modern 2-strokes have a power valve feature, which at low rpms, configures your exhaust port to give you maximum torque, and at high rpms it gives you maximum horsepower… the best of both worlds! Our service covers these components and assures proper piston to power valve clearance. Your cylinder will be shipped to you with the power valve assembled. Just wipe down the gasket surfaces with a clean cloth and your ready to assemble.

RM250

RM250 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM250 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM250 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM250 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM250 Hi-Performance Nikasil Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

Power Valve Service

Modern 2-strokes have a power valve feature, which at low rpms, configures your exhaust port to give you maximum torque, and at high rpms it gives you maximum horsepower… the best of both worlds! Our service covers these components and assures proper piston to power valve clearance. Your cylinder will be shipped to you with the power valve assembled. Just wipe down the gasket surfaces with a clean cloth and your ready to assemble.

RM-Z250

RM-Z250 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM-Z250 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

RM-Z250 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

DRZ250

DRZ250 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

DRZ250 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

DRZ250 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

DRZ400

DRZ400 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

DRZ400 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

DRZ400 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ80

YZ80 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ80 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ80 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ125

YZ125 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ125 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ125 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250

YZ250 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250 Hi-Performance Top End Kit

  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250 Hi-Performance Nikasil Top End Kit

  • Nikasil cylinder
  • Stage I porting
  • Head mod. for race gas mix
  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

Power Valve Service

Modern 2-strokes have a power valve feature, which at low rpms, configures your exhaust port to give you maximum torque, and at high rpms it gives you maximum horsepower… the best of both worlds! Our service covers these components and assures proper piston to power valve clearance. Your cylinder will be shipped to you with the power valve assembled. Just wipe down the gasket surfaces with a clean cloth and your ready to assemble.

YZ250F

YZ250F Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250F Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ250F Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ400F

YZ400F Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ400F Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ400F Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ426

YZ426F Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ426F Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ426F Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

WR425

WR425 Stock Top End Kit

  • Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

WR425 Bore & Hone Top End Kit

  • Bore & Hone cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

WR425 Nikasil Top End Kit

  • Nikasil cylinder
  • Wiseco piston kit
  • Top end bearing
  • Top end gasket set
  • Power Valve Service
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ450F

YZ450F Cylinder Kits

YZ450F Cylinder Kit

  • Hone cylinder
  • Piston kit
  • Top end gasket set
  • Gasket surfaces prepped
  • 12.5:1 Compression
  • 13.5:1 Compression
  • CYLINDER NOT INCLUDED

YZ450F 450 Cylinder Kit

  • Hone cylinder
  • Piston kit
  • Top end gasket set
  • Gasket surfaces prepped
  • 12.5:1 Compression
  • 13.5:1 Compression
  • CYLINDER NOT INCLUDED

YZ450F Big Bore 470 Cylinder Kit

  • Bore & Nikasil
  • Piston kit
  • Top end gasket set
  • Gasket surfaces prepped
  • 13.5:1 Compression
  • CYLINDER NOT INCLUDED

YZ450F Head Kits

YZ450 Head Kit

  • Multi-angle valve job
  • 5 stock replacement OEM valves
  • new valve springs
  • Valve guides checked
  • New valve stem seals
  • Valve lash set
  • Gasket surfaces prepped
  • HEAD NOT INCLUDED

YZ450 Head & Cylinder Kit

  • Multi-angle valve job
  • 5 stock replacement OEM valves
  • New valve springs
  • Valve guides checked
  • New valve stem seals
  • Valve lash set
  • Piston kit
  • Hone cylinder
  • Top end gasket set
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ450F Hi-Performance Head Kit Stage I

  • Stage I porting
  • Stage I Hotcam
  • 4 Kibblewhite valves
  • Spring Kit
  • Multi-angle valve job
  • Valve guides checked
  • New valve stem seals
  • Valve lash set
  • Gasket surfaces prepped
  • HEAD NOT INCLUDED

YZ450F Hi-Performance Head Kit Stage II

  • Stage II porting
  • Stage II Hotcams
  • 5 Kibblewhite valves
  • Valve spring kit
  • Multi-angle valve job
  • Valve guides checked
  • Valve lash set
  • New valve stem seals
  • Gasket surfaces prepped
  • HEAD NOT INCLUDED

YZ450F Top End Kits

YZ450F Hi-Performance Top End Kit Stage I

  • Piston kit
  • Hone cylinder
  • Stage I porting
  • Hotcams intake and exhaust
  • 5 Kibblewhite valves
  • Kibblewhite valve spring kit with titanium retainers
  • Top end gasket set
  • Multi-angle valve job
  • Valve guides checked
  • Valve lash set
  • New valve stem seals
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED

YZ450F Hi-Performance Top End Kit Stage II

  • Piston kit
  • Hone cylinder
  • Stage II porting
  • Combustion Chamber mod.
  • Hotcams intake and exhaust
  • 5 Kibblewhite valves
  • Kibblewhite valve spring kit with titanium retainers
  • Top end gasket set
  • Multi-angle valve job
  • Valve guides checked
  • Valve lash set
  • New valve stem seals
  • Gasket surfaces prepped
  • CYLINDER & HEAD NOT INCLUDED
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