RPM A-arms for 4S BLX versions of the ARRMA Kraton & Outcast are designed primary for strength and durability but they’ve added a few extra features in as well.
First is slop elimination. These A-arms reduce the amount of movement of the A-arm at the hinge pins, providing for better steering response and more consistent camber, caster and toe angle settings.
The next improvement is the addition of a second shock mount hole further out on the arm, providing for a lower profile suspension set-up. This shock position allows the suspension to lay down a little further, dropping the ride height for a lower center of gravity and better cornering stability.
The most important update is durability. These A-arms are massive! At almost 25% thicker than stock, the A-arms will take a pounding and come back for more! All RPM A-arms are molded from a nearly indestructible blend of engineering grade nylons for performance you can rely on when conditions are at their worst!
Features:
![CLASSIC RANGE SXF VINYL SEAT BLACK WITH RED PIPING- NO HEADREST [SEAT01VPIP-RED]](https://www.caralarmmarket.com/wp-content/uploads/2026/10/classic-range-sxf-vinyl-seat-black-with-red-piping-no-headrest-seat01vpip-red.webp)
![BIG END BEARING 850/948/998/1100/1275- STANDARD- HEAVY DUTY [8G2198HD-STD]](https://www.caralarmmarket.com/wp-content/uploads/2026/10/big-end-bearing-850-948-998-1100-1275-standard-heavy-duty-8g2198hd-std.webp)
