Our Stage 4+ kits allows you to customize a kit for your application. The 4+ kit starts with package similar to that of the stage 3 kit but adds a Ported and Milled Head, stainless valves, billet rockers, and a serious cam package. Options include everything from roller rockers to stroker kits. This kit will allow you to build a motor in excess of 20+ hp.

KIT INCLUDES:

• Race/Open Air Filter & Adapter
• 22mm Mikuni Carb Kit (other carbs optional)
• Ported & Milled Head (OHV or Hemi depending on kit)
• Oversize Stainless Valves (27/24 on Old style, 28/25 on Hemis)
• 1.2 Roller Tip Rocker Arms
• Chrome Moly Pushrods
• Stud Kit
• 26 lb Springs,
• Lash Laps
• 8 degree Timing Key,
• Gasket Kit
• Billet Rod
• Billet Guide plate
• Choice of Compression Ratios - Compression ratios based on Flat-Top piston. If a Dished piston is used, deduct approx 1.5 points,
• Choice of Cams
• Optional Long Rod
• Optional Roller Rockers
• Optional Flywheels
• Optional Crankshaft
• Optional Stroker Kit

Picture is for reference only!!! Actual content based on above description and selections. In other words, the flywheel shown is optional!!

Due to the head work involved in these kits, Allow 1 week to ship

Note: Hemi Kits do not included Valve Cover. Order Seperate.

Filter should be sprayed with K&N type oil, especially in dirt applications. Oil not included click here

These kits are intended for experienced engine builders. Some clearancing, fitment, or other engine building "tricks" may be needed. Hemis may need pistons notched for valve clearance

Step up from the Stage 1, this kit is designed to further improve the power for the GX240s and GX270s by adding a larger carb and cam.

225 to 236cc Stroker Kit for 212 Predators

Includes:

• + .175 Billet Steel Stroker Crank,
• Wiseco or JE Forged Piston,
• 3.625 Billet Rod,
• rings,
• HD wristpin, and
• clips.

Sleeve not included (typically not required for 2.815 bore or less)

Top of piston must be cut and block honed or bored to fit. Block must be significantly Clearance. Requires Chinese OHV or Honda flywheel. Will NOT work with Predator flywheels

This is not a bolt in kit, but for experienced engine builders. Balancing not required but recommend

225cc with 2.757 Piston (must bore block)

236cc with 2.815 Piston (must bore block)

For those looking to get the maximum performance without opening up the case, we offer our stage 2 kit. Same as our stage 1 kit but with the addition of a bored carb to produce in excess of 10 hp.