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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
providing additional tuning options and ultimately
Weight: 192g
Castle did a great job with airflow through the Sidewinder 4
Weight: 12 Ounces
Rear A-arms for B6 & B6D piston providing additional tuning options andRPM Rear A arms for the Associated B6 & B6D are designed with the same principles as their Flat Front A arms (RPM #81372) & Gull Wing Front A arms (RPM #81422). With stock A arms, the amount of slop at the hinge pins can cause your suspension settings to wander. RPM hinge pin holes are held to strict tolerances, with no more than 0. 0005" to 0. 001" (. 013 to . 025mm) of clearance, an improvement of nearly 300% over stock! RPM B6 B6D A arms are 4. 75
