Max Power Inc. offers the largest selection of big bore kits for motorcycles and ATV's anywhere. Max Power is the home of the Ice Cube cylinder. Max Power has big bore and stroker kits available for both 2 stroke and 4 stroke engines. We are also your one stop engine performance shop selling stock displacement performance modifications, high compression pistons, Hot Cams, Web Cams, big bore kits, Hot Rods stroker crankshafts, Rossier exhaust systems, Jardine exhaust systems, Leo Vince exhaust systems, Wiseco pistons, CP Pistons and Cometic gaskets. Max Power Inc. also offers full service cylinder head work including porting and oversize valves from Xceledyne and Kibblewhite. Max Power is one of only 4 companys in the US that has a true in-house cylinder plating facility. Max Power can plate your cylinder with nickel silicon carbide called Apticote 2000, Max Power offers cylinder porting, head modifications, 2 stroke big bore kits, Stroker engines, supermini mods and is the only company that makes the YZ167. 2 Stroke and 4 stroke stroker crankshafts and crankshaft balancing are available too.

YZ277F Stealth Big bore/Stroker
YZ292F Ice Cube Big Bore/Stroker
YZ/WR 315F Ice Cube Big Bore/Stroker
Click here for additional performance options for your KX250F

| $599 | We Modify your cylinder |
| $75 | Exchange Cylinder |
| $850 | "Bolt On" - Includes Cylinder (Prices vary by year) |
| $899 | Installed and Blue Printed |
YZ/WR262F STEALTH Specifications: |
Fits 2001 - Current YZ/WR250F |
| Bore: Yes | Stroke: No | Actual Displacement = 262.73cc |
| Engine Modifications Included: | |||||
| Cylinder: | OEM Cylinder bored and re-plated with Apticote 2000 | ||||
| Fuel Required: | 91-100 octane - Options Available | ||||
| Piston: | Wiseco or CP Piston kit | ||||
| Gaskets: | Top end gaskets included. | ||||
| Crankcase/Head: | No modification required | ||||
Click here to see the dyno chart
Click Here to order this kit now!

| $550 | "Bolt On" - Includes Cylinder |
| $850 | Installed and Blue Printed |
YZ/WR270STEALTH Specifications: |
Fits 2001 - Current YZ/WR250F |
| Bore: Yes | Stroke: No | Actual Displacement = 269cc |
| Engine Modifications Included: | |||||
| Cylinder: | Aftermarket cast cylinder with nickel plating | ||||
| Fuel Required: | 91 octane | ||||
| Piston: | Wiseco Piston kit | ||||
| Gaskets: | Top end gaskets included. | ||||
| Crankcase/Head: | No modification required | ||||
Click Here to order this kit now!

| $869 | "Bolt On" - Includes Cylinder |
| $1149 | Installed and Blue printed |
YZ/WR 276F ICE CUBE Specifications: |
Fits 2001 - Current YZ/WR 250F |
| Bore: Yes | Stroke: No | Actual Displacement = 276.20cc |
| Engine Modifications Included: | |||||
| Cylinder: | Billet Aluminum cylinder plated with Apticote 2000 | ||||
| Fuel Required: | 91-100 octane - Options Available | ||||
| Piston: | Wiseco or CP Piston | ||||
| Gaskets: | Top end gaskets included. | ||||
| Crankcase/Head: | No modification required | ||||
Click here to see the dyno chart
Click Here to order this kit now!
YZ277F Stealth Big Bore/Stroker

| $1199 | "Bolt In" Kit Includes cylinder and crankshaft |
| $1699 | Optional Install and Blue Print |
YZ/WR 277F STEALTH Specifications: |
Fits 2003 - Current YZ250F |
| Bore: Yes | Stroke: Yes | Actual Displacement = 277.44cc |
| Engine Modifications Included: | |||||
| Cylinder: | OEM cylinder bored and plated with Apticote 2000 | ||||
| Fuel Required: | 91-100 octane - Options Available | ||||
| Piston/Crankshaft: | CP or Wiseco Piston - Aftermarket stroker crankshaft (Balance recommended Add $250) | ||||
| Gaskets: | Gaskets necessary for install. | ||||
| Crankcase/Head: | No modification required | ||||
Click here to see the dyno chart
Click Here to order this kit now!
YZ292F Ice Cube Big Bore/Stroker


| $ | |
| $ | |
| $1495 | "Bolt On" - Includes Cylinder and crankshaft |
| $500 | Optional install and blue print |
YZ292F STEALTH Specifications: |
Fits 2003 - Current YZ250F |
| Bore: Yes | Stroke: Yes | Actual Displacement = 291.66cc |
| Engine Modifications Included: | |||||
| Cylinder: | Billet Aluminum cylinder plated with Apticote 2000 | ||||
| Fuel Required: | 91-100 octane | ||||
| Piston/Gaskets: | Wiseco Piston / Gaskets necessary for install | ||||
| Crankshaft: | Aftermarket stroker crankshaft - Balance highly recommended (Add $250) | ||||
| Crankcase/Head: | No modification required | ||||
Click Here to order this kit now!
YZ/WR 315F Ice Cube Big Bore/Stroker
Click here to read what Dirt Bike had to say about the YZ315 Ice Cube
| $2850 | "Bolt On" - Includes Cylinder and crankshaft |
| $3050 | Installed and Blueprinted - We keep your good cores |
YZ/WR315F STEALTH Specifications: |
Fits 2001 - Current YZ/WR250F |
| Bore: Yes | Stroke: Yes | Actual Displacement = 315cc |
| Engine Modifications Included: | |||||
| Cylinder: | OEM cylinder bored and plated with Apticote 2000 | ||||
| Fuel Required: | 91-100 octane - Options available | ||||
| Piston: | CP or Wiseco Piston | ||||
| Crankshaft: | Stroked and balanced with Long rod kit. | ||||
| Crankcase/Head: | No case modification required | ||||
Notes: Up to $300 in core credits available for "bolt on" kits. All cores subject to inspection.
Click here to see the dyno chart.
Click Here to order this kit now!


