TTMRC GY6 RR 4-Valve Camshaft

If you're running the TTMRC RR 4-valve head, this is the cam it was designed around. The RR camshaft is ground to open the 25mm intake / 22mm exhaust valves harder and longer than a stock GY6 profile, so your 4V head actually flows what it's capable of instead of leaving power on the table up top.

It's built for the roller-rocker RR valvetrain — the reduced friction lets you run a more aggressive lobe without hammering the valvetrain, which means stronger mid-to-top pull on 232cc and other big-bore B-block builds. Pair it with a matched CVT and intake and you'll feel the difference where it counts: the last third of the rev range where a stock cam just falls flat.

This is a purpose-built race/performance part for the RR 4V platform. It is not a drop-in for 2-valve heads.