- Big Bore Kit
- Brand
- 50 Caliber Racing (51)
- Advantage Parts (28)
- Alpha Rider (36)
- Athena (98)
- Athena Az Quad Parts (27)
- Bbr Motorsports (78)
- Cylinder Works (87)
- Honda (41)
- Hyway (29)
- Niche (59)
- Polaris (26)
- Power Part Pros (57)
- S & S Cycle (130)
- Smm (27)
- Tb Parts (155)
- Tbparts (52)
- V-twin (37)
- Vertex (47)
- Wiseco (80)
- Yamaha (54)
- Other (2342)
- Engine Type
- Material
- Pin Diameter
- Piston Diameter
- Type
- Big Bore (42)
- Big Bore Kit (111)
- Big Bore Top End Kit (5)
- Block Cylinder (6)
- Complete Cylinder (21)
- Cylinder (21)
- Cylinder Barrel (49)
- Cylinder Block (6)
- Cylinder Head (5)
- Cylinder Kit (71)
- Cylinder Piston Kit (6)
- Cylinder Rebuild Kit (6)
- Engine (5)
- Engine Parts (5)
- Engine Rebuild Kit (130)
- Piston (11)
- Piston Kit (84)
- Top End Kit (9)
- Top End Rebuild (5)
- Top End Rebuild Kit (37)
- Other (2906)
Koso North America 170cc Big Bore Kit MB623002
Koso North America 170cc Big Bore Kit. Overview of Koso North America 170cc Big Bore Kit.
Want to unleash all the power your Honda GROM can handle? Our 170cc big bore kit is the perfect addition for you! Kit includes a ceramic coated cylinder, 61mm forged piston, rings, pin, gasket set and banjo bolts Its compression ratio of 11.5:1 will allow you to still use premium pump gas and keep the reliability of a stock motor Made from the best components available on the market, our 170cc big bore kit will amaze you!
For replacement piston kit, order DK part no 133311 Included Items: (1) Aluminum cylinder (1) Piston (1) Piston pin (2) Circlips (2) 10mm-1.25 x 720mm banjo bolts (2) 10mm aluminum crush washers (1) Base gasket (1) Head gasket (1) Ring set includes (1) top ring, (1) second ring, (2) oil rings and (1) oil ring spacer Instructions. This item fits the following machines.