DOHC Bore Up Kit (145cc) - Kitaco - CRF100 XR100 Chinese Pitbike & Engine Parts Each spring set is precisely

Each spring set is precisely wound from high-grade spring steel for consistent performance and long-term durability

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While it requires removing the seat to adjust

Fits 2017-Current Z125

DOHC Bore Up Kit (145cc) - Kitaco - CRF100 XR100 Chinese Pitbike & Engine Parts Each spring set is preciselyCylinder: Aluminum cylinder (Hard plating) Piston: Forging WPC + MOS2 processing (3R specification) Displacement: 145cc Compression: 11. 7: 1 Bore Diameter: 57 Stroke: 56. 5mm (Long stroke) ULTRA SE high camshaft Valves come assembled in head Fits all years XR100R and CRF100F High performance and high power!!!! Even more affordable. This is the ultimate engine tuning and DOHC kit for the 100cc vertical engine. The extremely compact DOHC 4 valve