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KUSTOM KRAFT PERFORMANCE

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Increase Your Low End and Your Fun At The Same Time

The most economical and effective way to increase the performance of your engine. Available for two stroke
and  four stroke KTM Motorcycles a like. Whether racing or just trail riding, increasing your engine    
displacement with a big bore kit will give you that added power you've been searching for. Big bore kits are
very reliable and easy to install when compared to most other engine modifications.

Send us your cylinder (
and head, along with the power valves/two stroke cylinders only), we will bore, sleeve
or Re-Nikasil your cylinder to the new larger size. Your power valves will be modified if needed to function  
properly with the larger bore size. Some models will have the cylinder head re-chambered for the proper
volume and compression ratio. Our big bore kits include a high performance piston with piston rings, piston
pin and circlips. New top end gaskets are included for most models
KTM 250 SX 285cc Big Bore Kit

KIT INCLUDES SLEEVING, AND PISTON KIT. HEAD AND POWER VALVE MODIFICATION.

KTM-250SX  1990-1994 285cc Kit   .........................................................................$615.00
KTM 250 SXF 280cc Big Bore Kit

KIT INCLUDES SLEEVING, JE PISTON KIT AND TOP END GASKET SET

KTM 250 SXF  2005 - 2007  280cc Kit  12.5:1 compression ratio...........$489.00

KTM-250SXF  2005 - 2007 280cc Kit  13.5:1 compression ratio.............$504.00

KTM 280 SXF 280cc  KIT    click here for details
2007 KTM 250 EXCF 280cc KIT

KTM Big Bore Kits

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