Daytona Big Bore Kit, Honda CRM50

Engine Displacement (62.9cc)=Bore Diameter: 44mm x Stroke Length: 41.4mm This Big Bore Kit will give you a short cut to increase power!Not like standard big bores kits adjusted for race regulations at a maximum of 60cc, this city use big bore kit will...

Big Bore Kit, Yamaha TZR50 93-

Engine Displacement (68.8cc)=Bore Diameter: 47mmxStroke Length: 39.7mm The shortest distance to Power up!Unlike traditional Race regulation's upper limit of 60 cig Big bore, the city ride Big bore aiming for Engine Displacement Volume Up to the limit...

Hyper Head 124.8cc Version Up Kit

Hyper head big bore kit It is Kit for version up from 124cc to 124.8cc. *Please use the high-octane fuel.*It requires crankcase boring (Diameter 56.6 to 56.8mm, depth 27mm).*It requires installation together with the outer rotor kit, secondary side...

Repair Parts for Normal Head Big Bore Kit (35039) - Cylinder

Cylinder for normal head compatible big bore kit For single APE / XR system 35039 repair parts.

Piston Kit for Bore Up, 62.9cc, Honda NSR50, MBX50, NS-1

Engine Displacement (62.9cc)=Bore Diameter: 44mmxStroke Length: 41.4mmPiston Clearance: 0.05-0.06mm[Product Contents]Piston x1pc.Piston Ring Set (Top, Second) x1pc./eachPiston Pin x1pc.Piston Pin Ring x2pcs.Head Gasket x1pc.Base Gasket x1pc. Piston...

Super DRAG Big Bore Kit (Steel Cylinder), Yamaha Jog ZR

[Bore Diameter] 48mm The shortest distance to Power up!Normal cylinder diameter:40mm, SUPERDRAG Big bore realizes Cylinder diameter:48mm.The shape of exhaust/intake port is model Exclusive Design.Big bore kit with Cylinder head that realizes...

Super DRAG Big Bore Kit (Steel Cylinder), Honda Dio

[Bore Diameter] 48mm The shortest distance to Power up!Normal cylinder diameter:40mm, SUPERDRAG Big bore realizes Cylinder diameter:48mm.The shape of exhaust/intake port is model Exclusive Design.Big bore kit with Cylinder head that realizes...

SP Crankshaft 41.4mm

Stroke: 41.4mmCrank Shaft Assembly Weight: Approximately 1725g (STD Weight: Approximately 1810g)[Included Parts]Woodruff KeyCrankcase Gasket Best Balance to 85/88cc!Approximately 100 g lighter than Standard Crankshaft.SPCrankshaft which balanced...

Crank, Long Stroke 52mm

Crankshaft Assembly Weight: Approximately 1.930g Fits: HONDA GORILLA (GORILLA) 1978 [Frame No.] Z 50 J - 1300027 to 1410978 HONDA GORILLA (GORILLA) 1981 [Frame No.] Z 50 J - 1412284 to 1428813 HONDA GORILLA (GORILLA) 1982 [Frame No.] Z50J-1429176 to...

Crank, Long Stroke SP 52mm

Crankshaft Assembly Weight: Approximately 1.870g Fits: HONDA GORILLA (GORILLA) 1978 [Frame No.] Z 50 J - 1300027 to 1410978 HONDA GORILLA (GORILLA) 1981 [Frame No.] Z 50 J - 1412284 to 1428813 HONDA GORILLA (GORILLA) 1982 [Frame No.]...

Long Stroke Crank 52mm

● Crankshaft ASSY Weight: about 1,930 g. ● Since the crankshaft is damaged, it is necessary to install it simultaneously with a lightweight outer rotor (weight of flywheel 700 g or less). ● Since the top dead center position drops by 0.8 mm, there is no...

Long Stroke Crank SP 52mm

● Crankshaft ASSY Weight: about 1,870 g. ● Since the crankshaft is damaged, it is necessary to install it simultaneously with a lightweight outer rotor (weight of flywheel 700 g or less). ● Since the top dead center position drops by 0.8 mm, there is no...