TTMRC GY6 RR 4V Head - Replacement Valve Keeper Cotter Set of 8

Valve keepers are small parts, but they’re the only thing holding your valves in your head at high RPM. This 8-piece set is a direct replacement for the TTMRC RR 4-valve GY6 cylinder head. It covers all four valves (2 intake, 2 exhaust) in one kit.

Keepers (also called cotters or collets) lock the spring retainer to the valve stem groove. Worn, rounded, or mismatched keepers can let a retainer slip. On a high-compression 4V head, a dropped valve usually means a new piston, valve, and possibly a head. If you’re rebuilding, refreshing springs, or going to lighter retainers, put in fresh keepers too.

Features

• Complete set: 8 keeper halves = 4 pairs, enough for every valve on the TTMRC RR 4V head
• Factory-correct taper for a secure lock between retainer and stem
• Hardened steel construction 
• Direct OEM-style replacement for the TTMRC RR 4V head

Specifications

• Quantity: 8 pieces (4 pairs)
• Fits valve stem diameter: 5.0mm

Fitment

• TTMRC GY6 RR 4-valve cylinder head
• GY6 125/150/180cc engines running the TTMRC RR 4V head [CONFIRM displacement range]
• Not for stock 2-valve GY6 heads. Those use a 4-piece keeper set.