Big Bore Kits

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...

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...

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...

FINGER FOLLOWER DOHC Replacement Parts - Valve Spring

Communal to IN/EXFinger Follower DOHC/Finger Follower DOHC/1pc.

FINGER FOLLOWER DOHC Replacement Parts - Exhaust Valve

Finger Follower DOHC/[Size] Φ18/Φ4[Quantity] 1pc./each

FINGER FOLLOWER DOHC Replacement Parts - Intake Valve

Finger Follower DOHC/Used Quantity: 2pcs.Size Φ21.5/Φ4Quantity 1pc./each

FINGER FOLLOWER DOHC Replacement Parts - Head Single Item

Repair Cylinder Head & Cover set for Finger for Lower DOHC

Dynahead DOHC Repair Parts - Ceramic Plated Cylinder #934 54mm

· Finger follower DOHC· Old DOHC (69646/70655)· Dyna head