4-Stroke Parts

Chain Drive Sprocket for 4G Tapered Engine

$14.99

Solid 9 tooth sprocket for the 4G T-Belt drive transmission. Located at the rear of the transmission and include set screws for the base of the gear. Woodruff key sold separately and available upon request.

Connecting Rod

$19.99

Also includes Rod Cap (Part #24) and Oil Splash Fork (Part #25) and also M5x25 Stud (Part #25) *Oil Flinger Included with Connecting Rod Kit 4 Stroke Engine Replacement Part # 31 -- Link Lever

Engager Cable 2 Pack

$12.99 $9.99

Engager cable for stage III transmission. Contains 2 cables per pack. Cable length approximately 31 in. 2 part engager cable comes with the cable from the Stage III trans to adjusting sleeve (item # 4S-CA-ECSA3) and cable from adjusting sleeve to clutch...

Here you will find replacement parts, upgrades, and accessories for your 49cc 4-Stroke bicycle engine kit.