Power Driven Diesel | Hardened Chromoly Spring Retainers – 6BT
PDD Hardened Chromoly spring retainers, oxide coated hardened chromoly steel retainers.
10º locks
40 grams
Good for long term reliability up to 4200RPM with Cummins 60lb valve springs.
This is underrating the springs a little, if you plan on going over 4200rpm do so with caution or upgrade to our conical springs.
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