- Big Bore Kit
- Bore
- Brand
- 50 Caliber Racing (53)
- Advantage Parts (28)
- Alpha Rider (36)
- Athena (163)
- Athena Az Quad Parts (30)
- Bbr Motorsports (79)
- Cylinder Works (138)
- Harley-davidson (30)
- Honda (55)
- Hyway (30)
- Niche (67)
- Power Part Pros (57)
- S & S Cycle (166)
- Smm (29)
- Tb Parts (172)
- Tbparts (73)
- V-twin (37)
- Vertex (51)
- Wiseco (95)
- Yamaha (59)
- Other (2738)
- Compatible Make
- Compatible Type
- Features
- Type
- Big Bore (43)
- Big Bore Kit (177)
- Big Bore Top End Kit (6)
- Block Cylinder (6)
- Complete Cylinder (33)
- Cylinder (22)
- Cylinder Barrel (67)
- Cylinder Block (11)
- Cylinder Kit (84)
- Cylinder Piston Kit (8)
- Cylinder Rebuild Kit (6)
- Engine Kit (6)
- Engine Parts (5)
- Engine Rebuild Kit (202)
- Piston (13)
- Piston Kit (108)
- Rebuild Engine Kit (6)
- Top End Kit (11)
- Top End Rebuild (5)
- Top End Rebuild Kit (45)
- Other (3322)
49mm For Yamaha CRUX100 Big Bore Cylinder Piston Ring Gasket Kit
For Yamaha CRUX100 49mm Big Bore Cylinder Piston Ring Gasket Kit. This complete top-end repair kit is designed for Yamaha CRUX100 100cc 4-stroke single-cylinder air-cooled engines. Standard OEM cylinder bore is 50.0 mm (approximate displacement 100-110 cc).
This 59 mm kit is a. (approximate displacement 150-160 cc, professional installation required). Cylinder bore: 59.0 mm (oversize / performance spec). Piston diameter: 59.0 mm (matched to cylinder). Piston rings: 59 mm set (2 compression rings + 1 oil ring).Piston pin size: Verify original specification before ordering. 49mm cylinder block (aluminum alloy / cast iron).
Full top-end gasket set (cylinder head gasket + base gasket). Standard OEM bore is 50mm - this is a big bore performance upgrade, not standard size. Confirm original piston pin diameter before ordering. Professional engine building experience strongly recommended.
Crankcase boring may be required for installation. Yamaha JY110 series (similar 110cc base engines). Other horizontal 100-110cc Yamaha commuter engines. Ideal for restoring lost compression, eliminating blow-by, increasing power, and refreshing top-end performance on Yamaha 100-110cc commuter engines. Perfect for daily commuting and engine rebuilding.