RPM B6/B6D "Flat" Front Arms
RPM

RPM B6/B6D "Flat" Front Arms

Part # RPM81372
Where to buy
$12.99
AMain Hobbies
Seen Oct 12, 2026
$12.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

You can’t go fast if your suspension settings don’t stay locked in. With stock A-arms, the amount of slop at the hinge-pins can cause your suspension settings to wander (we found as much as 0.003” or .076mm of clearance in the hinge pin holes of a stock set of new A-arms). Not with RPM A-arms! RPM hinge-pin holes are held to extremely strict tolerances, with no more than 0.0005” to 0.001” (.013 to .025mm) of clearance, an improvement of nearly 300%! They also use in-line screws to retain the outer hinge pins while they ditch the inside retaining screws for shoulders in the hinge pin holes. This results in a weight reduction of 1.75 grams per A-arm (or 3.5 grams per pair) less than stock!

Durability is also key to staying on-track! RPM customers have repeatedly reported that stock A-arms break easily. Whether bashing or racing, RPM A-arms are the toughest A-arms on the market so a rough landing or a hit from another competitor won’t take you out of the race!

With unmatched performance, extremely lightweight materials and the ability to hold your suspension settings even after a wicked wreck, RPM A-arms will get you across the finish line EVERY time!

Tech Notes: RPM81372 replaces stock Associated ASC91671.

CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews

No reviews yet.

Builds using this part

No builds use this part yet — add it to yours from the build editor.