DHM High Compression Stock Bore Piston

A high compression piston kit is one of the best upgrades to add to your build. With the stock compression coming in at 9.3:1, it offers dull throttle response and limits power in the higher rpm range.

The DHM Race-spec stock bore piston has produced more HP than any other stock bore kit and is the highest compression stock bore piston on the market. It's gone through extensive testing on the racetrack and has proven to provide the most power possible from the stock bore. 

• ~13.2:1 compression 52.4mm stock bore piston
• Larger ring and skirt oiling holes than other pistons on the market
• Larger oil spring to increase oil volume between the oiling rings
• Oil ports under the pin holes to keep the wrist pin lubricated
• 360 Degree skirt design to increase overall strength
• Racing piston ring kit with pins and circlips
• Valve reliefs that clear valves up to 27.5/23.5 cylinder head valves
• Includes a new base gasket and head gasket
• Requires NGK CR9E (6263) spark plug (Included)
• Requires at least 91 octane fuel
• Price is for piston kit only, cylinder NOT included