507S - PBM Performance - CHROME -MOLY 10� RETAINERS - fits 1.550"-1.630" O.D. Dual Spring - Any Valve Stem (1.486"x1.137"x.735") - Std
These retainers are machined from aircraft-quality, chrome-moly, alloy-steel that far exceeds the industry standards for steel retainers. All retainers are heat-treated to 46-50 Rockwell- C, then tumbled and finished with black-oxide to prevent rust. PBM Chrome-Moly Retainers, deliver incredible strength, with just slightly more weight than more expensive titanium retainers. Chrome-moly retainers are designed for Street, Off-Road and all but the most severe racing applications. They are ideal for Oval-Track racing.
- Erson Cams
- 10 DEGREE
- CHROME MOLY 1.55-1.630 OD