This is a one stop kit for your 5.4v Race engine. Buying all in one kit saves you over 120$

This can also be used to convert from 8mm chains to 10mm

New Primary chains

New primary gears for 10mm chains

New upgraded secondary chains

New Wonder Racing modified primary tensioners

New driver side secondary tensioner

New modified passenger secondary tensioner

Hardware for guides and tensioners

New upgraded tension pivot pins

New 4V Billet guides set w/ Liners

New 10mm crank gear for thin style reluctor wheel