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@precisionturbo 75's and 85's as well as @borgwarnerboosted S400's
Uniform machine peening
All kits come complete with hardened parallel-ground washers and high quality nuts
Shortly after the heads are drilled to fit larger 1/2" or 14mm head studs
and built-in velocity stack
CIRCO S83 Race Brake Pads Fuel Filler Hose @precisionturbo 75's and 85's asCIRCO S83 is a performance street & entry level track day compound also used extensively in rear axle competition configurations where friction repeatability is important along with a reduction in bite towards the end of a stop. This helps to reduce the likelihood of rear locking when the rear axle load is reduced as weight moves forward. This also helps with those needing to trail brake to achieve the desired turn in. Typically used in front engine
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