Thread Lock Compound - Blue Medium StrengthThe best way to secure bolts prone to vibration and backing out Need to prevent a fastener from loosening or backing out while still being removable? For 1 4" to 3 4" dia. fasteners. Removable strength used before assembly. Max temp 300 degrees F.

SPEC spends a lot of time and effort on research and development of optimum flywheel dimensions and weights for all types of driving and racing and can optimize your MOI (moment of inertia) to maximize your car's output and performance

Select parts are also available in an optional stiffer urethane (Black Series) for track and autocross performance where NVH is less important

Optimized fuel and timing

This kit includes a new under-drive crankshaft pulley

12-13-1-712-219 / 12 13 1 712 219

CJXB and CJXC

The JB4 includes a simple plug and play installation harness and is compatible with all ECU versions and transmission types

True 3″ Stainless steel exhaust

please read the fitting instructions prior to installation

This additional kit includes tuned

does not fit with PSE (2017+)

and not some cheap welded together sheet metal pieces