Star 2.5mm Over Valve Spring Kit – Single Groove Top Lock | Milwaukee-Eight 2017–2026
Back by popular demand and available for a limited time - this is the only single groove top lock kit available on the market!
This complete 2.5mm oversize valve kit gives M8 builders everything needed for a proper valve job in a single package — no sourcing parts separately, no compatibility guesswork. The kit pairs Victory 2.5mm oversize stainless-steel intake and exhaust valves with titanium custom retainers, billet top lock locks, PSI springs rated to .650 lift, and valve seals. Whether you're refreshing a high-mileage top end or building for performance, this kit delivers the components and the confidence to do it right.
What's Included:
- Victory 2.5mm oversize stainless-steel intake & exhaust valves
- Titanium custom retainers
- PSI valve springs (rated to .650 lift)
- Billet single groove top lock locks
- Valve seals
Fitment: Milwaukee-Eight 2017–2026
Star 2.5mm Over Valve Spring Kit
- Complete kit — valves, retainers, springs, locks, and seals included; no separate sourcing required
- 2.5mm oversize stainless steel valves — improved flow and durability over stock
- Titanium custom retainers — reduced reciprocating mass for high-rpm reliability
- PSI springs rated to .650 lift — headroom for aggressive cam profiles without spring bind
- Billet single groove top lock locks — precision machined for secure, consistent valve retention
