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YFZ450 2006-2009 APPLICATION: High Compression Piston Kit, increases compression ratio to 13.0:1 offers 1.5 to 3hp power increase throughout the power range. No crank rebalancing necessary. Piston is forged aluminum with machined valve pockets for additional valve clearance when higher lift camshafts are used. Includes piston rings, piston pin, and clips (uses stock replacements). GYTR Top End Gasket Kit GYT-5TG04-10-00 required. Requires use of minimum 100-Octane racing fuel. YFZ450R 2009-2016 APPLICATION: High Compression Piston Kit, increases compression ratio to 13.2:1 offers 1.5 to 3hp power increase throughout the power range. All other information same as above. Must run 100 Octane fuel.
Fits:
- 2006 – 2009 YFZ450 Hypersports
- 2009 – 2016 YFZ450R Hypersports
