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RPM Rear A-Arms For The Arrma Kraton & Outcast 4S Blx (RPM 80742 | RPM80742)

Model: RPM 80742
Dist. #: RPM80742   SKU: RPM80742

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South Jordan, UT
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Price:  $14.39

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Updated on Sep 28, 2025 07:39:59 PM

Rear A-Arms For The Arrma Kraton & Outcast 4S Blx...
Rear A-Arms for the Arrma Kraton & Castaway fours BLX

RPM A-arms for FOUR BLX variations of the ARRMA Kraton & Castaway are created primary for strength and durability but they have actually added a couple of extra features in as well.

First is slop elimination. These A-arms decrease the amount of movement of the A-arm at the hinge pins, offering better steering reaction and more consistent camber, caster and toe angle settings.

The next improvement is the addition of a second shock install hole further out on the arm, offering a lower profile suspension set-up. This shock position enables the suspension to set a little more, dropping the flight height for a lower center of mass and better cornering stability.

The most important upgrade is durability. These A-arms are enormous! At nearly 25% thicker than stock, the A-arms will take a pounding and return for more! All RPM A-arms are formed from a nearly indestructible blend of engineering grade nylons for efficiency you can depend on when conditions are at their worst!

Features:

  • Almost 25% thicker than stock a-arms for severe durability

  • Less slop for improved suspension and guiding efficiency

  • Second shock install hole for added adjustability

  • Replace stock #AR330521


  • This item compliments the above reviewed item.

    Front A-Arms For The Arrma Kraton & Outcast 4S Black

    Front A-arms for the Arrma Kraton & Castaway fours Black

    RPM A-arms for FOUR BLX variations of the ARRMA Kraton & Castaway are created primary for strength and durability but they have actually added a couple of extra features in as well.

    First is slop elimination. These A-arms decrease the amount of movement of the A-arm at the hinge pins, offering better steering reaction and more consistent camber, caster and toe angle settings.

    The next improvement is the addition of a second shock install hole further out on the arm, offering a lower profile suspension set-up. This shock position enables the suspension to set a little more, dropping the flight height for a lower center of mass and better cornering stability.

    The most important upgrade is durability. These A-arms are enormous! At nearly 25% thicker than stock, these A-arms will take a pounding and return for more! All RPM A-arms are formed from a nearly indestructible blend of engineering grade nylons for efficiency you can depend on when conditions are at their worst!

    Features:

  • Almost 25% thicker than stock a-arms for severe durability

  • Less slop for improved suspension and guiding efficiency

  • Second shock install hole for added adjustability

  • Changes stock #AR330520


  • Frequently Bought Together

    RPM Rear A-Arms For The Arrma Kraton & Outcast 4S Blx
    +
    RPM Front A-Arms For The Arrma Kraton & Outcast 4S Black
    This Item: RPM Rear A-Arms For The Arrma Kraton & Outcast 4S Blx
    $14.39
    RPM Front A-Arms For The Arrma Kraton & Outcast 4S Black
    $13.39

    Total Price: $27.78

    Add Both To Cart

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