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GM 89021807
Why Super Lube
BMRs Non-Adjustable Rear Sway Bar Kit (SB021) increases sway bar rate and is designed for street performance
BMR Suspension's SP364R lowering springs are available in red powdercoat for long-lasting good looks
Available in red or black powder coat
Manley Valve - Exhaust, Valve-SBC S/D 1.500 1988-pontiac-firebird-esi5674963 GM 89021807Manley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just
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