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Brand: G
Part #: 151-79-80
Description: Performance Valve Set 2V 18.4mm intake / 16mm exhaust valve. This Valve Set 2V 18.4/16 fits cylinder head 39mm 2V for 139QMB 49/50cc engines (scooters, quads, and buggies). NOTE: This valve set is ONLY for 64mm valves length cylinder head 39mm 2V. Use in conjunction with ..
$15.95
Brand: G
Part #: 151-245-6
Description: Performance Valve Set 2V 18.4mm intake / 16mm exhaust valve. This Valve Set 2V 18.4/16 fits cylinder head 39mm 2V for 139QMB 49/50cc engines (scooters, quads, and buggies).NOTE: This valve set is ONLY for 69mm valves length cylinder head 39mm 2V. Use in conjunction with a..
$15.95
Brand: G
Part #: 151-239
Description: Valve Set 2V 18.4/16 Kit for upgrade 139QMB 49/50cc engines (scooters, quads, and buggies). NOTE: This valve set is ONLY for 64mm valves length cylinder head 39mm 2V. Use in conjunction with a 64mm rocker arm 2V ONLY (will not fit 69mm). For 69mm valve leng..
$24.00
Brand: G
Part #: 151-262
Description: Valve Set 2V 18.4/16 Kit Fit 69mm for upgrade 139QMB 49/50cc engines (scooters, quads, and buggies). NOTE: This valve set is ONLY for 69mm valves length cylinder head 39mm 2V. Use in conjunction with a 69mm rocker arm 2V ONLY (will not fit 64mm). For 64mm valve lengt..
$25.95
Non-Stock
Brand: Hoca
Part #: 169-381
Description: Performance Hoca Valve Set 2V larger 21.5mm intake / 19mm exhaust valve. This Hoca Valve Set 2V 21.5/19 fits cylinder head 39mm 2V for 139QMB 81-88cc engines (scooters, quads, and buggies). NOTE: Use in conjunction with a 64mm cylinder head 2V and 64mm rockerarm 2V O..
$22.50
Non-Stock
Brand: Hoca
Part #: 169-356
Description: Hoca Valve Set 4V 21.5/19 for GY6 125/150cc 4-stroke engine.Specifications: Include the following Valve set.• 4x Valves: 21.5x83mm Intake / 19x84mm Exhaust / Stems: 5mm• Made in Taiwan• Fit Valve Springs: 4V / Keepers: 4V / Retainers..
$59.95
Brand: Naraku
Part #: NK600.37
Description: Naraku Cylinder 52mm 125cc Big Bore Kit with 4V Cast Piston. Complete cylinder kit with all gaskets and small parts for fitting. This 125cc Naraku cylinder yields engine performance corresponding to the original. Thus ideal as a top-quality replacement for a defective original cylinder...
$143.95
Brand: Naraku
Part #: NK600.50F
Description: Naraku Cylinder 59mm 155cc Big Bore Kit with 4-Valve Forged Piston. Big Bore cylinder kit for Yamaha Cygnus 5ML engines like Yamaha BWS 125 and Yamaha Zuma 125. The highlight of this cylinder kit is the forged piston for increased durability and reduced friction valves and the raised pi..
$207.95
Brand: Naraku
Part #: NK600.50FC
Description: Naraku Cylinder 59mm 155cc Ceramic Bore Kit with 4-Valve Forged Piston for Yamaha Cygnus 5ML engines like Yamaha BWS 125 and Yamaha Zuma 125. This cylinder is an aluminum and ceramic coating cylinder with a hard chrome-plated 59mm cylinder bore. Aluminum ceramic coating cylinder wi..
$255.95
Non-Stock
Brand: Naraku
Part #: NK600.42
Description: Naraku Rocker Arm 4 Valve Assembly for Yamaha Cygnus 5ML engines like Yamaha BWS 125 and Yamaha Zuma 125.NOTE: Use a feeler gauge to check the gap and assure a fair gauge grip at 0.004 for the intake-valve-to-tappet and .005 for exhaust-valve-to-tappet. For reassurance please consult yo..
$87.15
Brand: NCY
Part #: 1100-1264
Description: NCY Cylinder 66mm 198cc Big Bore for Yamaha Cygnus 5ML engines like Yamaha BWS 125 and Yamaha Zuma 125. Give your Yamaha Zuma 125 some serious power with this 198cc big bore kit. You will need to bore out the engine cases to make this cylinder kit fit, which means a trip to the machine ..
$164.00
ETA 45 - 60 Days
Brand: Taida
Part #: GY6-01054-63CFH-4V
Description: High-Quality Taida Ceramic Cylinder 63mm 180cc with High-Compression 4-Valves Forged Piston offers better durability, power, and reduced friction for GY6 125/150cc+ engines. The high compression forged piston will offer better power and the ceramic cylinder with more heat dissipation wi..
$249.00
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