925cc Stealth Big Bore Kit // 2012-2017 ZR/F/XF/M 800/8000 ProCross/ProClimb
SPEEDWERX 925CC STEALTH BIG BORE KIT
Kit comes complete with cylinder boring, porting and plating, custom pistons, base gaskets, our Stealth head mod kit with your choice of 13:1 or 14:1 compression ratio inserts for premium 91+ octane fuel, and machining of your stock exhaust valves (our lightweight aluminum valves are also available). You must send in your stock cylinders and head for exchange.
Designed and Tested with Speedwerx Exhaust and Clutch Kit, Dynojet Power Commander, Boyesen Rad Valves, and High Flow Intake Vents- these parts are required for proper perfomance and tuning purposes.
2007-2009 model cylinders will see 170+ HP and over 115 FT Pounds of torque @ 7700-7900 rpm.
2010-up models will see 188+ HP due to the better port layout of the stock cylinders.
| Manufacturer | Speedwerx, Inc. |
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WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov See Proposition 65 Information for more on this Consumer Product Exposure Warning for residents of California.
These items are intended for closed-course competition only. Alteration of emissions-related components can constitute violation of federal and/or state laws. Substantial fines and penalties can result if used for other than closed-course competition use.