Description: Overview RPM front lower A-arms have a triple beam style construction designed to spread impact energy across all three beams. Each beam’s cross-section is a whopping 5/8” (15.8mm) tall x 3/8” (9.5mm) wide. These massive beams reduce unwanted flex during normal suspension movement, yet allow impact-absorption during those not-so-perfect landings and crashes. RPM also moved the inner cross brace away from the chassis, eliminating the droop stop entirely. While this may seem counter-intuitive, the test truck’s chassis was bent at the droop stops, clearly illustrating that extreme impacts were too much for the chassis plate to handle. After all, there’s not much worse than a bent chassis. RPM front upper A-arms use a dual beam construction where each beam is a massive 1/2″ (12.7mm) tall x RPM ARRMA Kraton/Outcast 8S Left Upper & Lower A-arms, RPM81522 Overview RPM front lower A-arms have a triple beam style construction designed to spread impact energy across all three beams. Each beam’s cross-section is a whopping 5/8” (15.8mm) tall x 3/8” (9.5mm) wide. These massive beams reduce unwanted flex during normal suspension movement, yet allow impact-absorption during those not-so-perfect landings and crashes. RPM also moved the inner cross brace away from the chassis, eliminating the droop stop entirely. While this may seem counter-intuitive, the test truck’s chassis was bent at the droop stops, clearly illustrating that extreme impacts were too much for the chassis plate to handle. After all, there’s not much worse than a bent chassis. RPM front upper A-arms use a dual beam construction where each beam is a massive 1/2″ (12.7mm) tall x 3/8” (9.5mm) wide. They eliminated the tube shape over the hinge pin to eliminate built-in molding stresses while beefing up the leading edge hinge pin support to add some much needed strength and durability. Both upper and lower A-arms are molded with fingernail slots that allow easy access to remove the aluminum support ring (not included) at the pivot ball. Made in the USA from RPM's trademark blend of ultra durable materials, you can’t go wrong with RPM! Version Notes: RPM A-arms work perfectly with 8S versions of the Kraton and Outcast using ARRMA ARA330569 Spring Perches. EXB models using ARRMA ARA330740 Spring Perches may experience interference issues at both the shock mount and sway bars. RPM does not recommend the use of a-arms on these vehicles since modification of the a-arms may be necessary to eliminate bind at the shocks and sway bars. Tech Notes: RPM A-arms for the ARRMA Kraton 8S and Outcast 8S are sold as one upper and one lower in each kit. One left and one right will be needed to complete the front end of one vehicle. RPM A-arms replace the upper A-arms from stock ARRMA ARA330561 and the lower A-arms from stock ARA330589. Installation Notes: Like stock A-arms, RPM Kraton 8S versions are sold without threads. If the pivot ball hole is difficult to thread using the pivot ball, RPM recommends thread tapping (tap not included) the hole for 3 – 4 threads, but do not tap any further. Additional cut threads will negate the thread-locking capability of the materials. Features Lighter than stock by 4.5 grams per upper / lower a-arm pair Replaces the front left upper A-arm from stock ARRMA ARA330561 Replaces the front left lower A-arm from stock ARRMA ARA330589 One vehicle will require (1) RPM81522 and (1) RPM81562 for completion of the front end Item Condition All items sold by Omni Models are sold as "New: A brand-new, unused, unopened, undamaged item." We do not sell used, opened, or damaged items. If an item is damaged during shipping, please see our Returns section to arrange a return. Shipping Returns About Omni Models Contact Us Shipping Omni Models ships to all 50 States as well as Puerto Rico, Virgin Islands, and other US protectorates. Unfortunately, we cannot ship to APO/FPO or PO Box addresses at this time. Some restrictions apply based on destination and item size. Our FREE shipping and combined shipping discounts save you money. We offer FREE economy shipping on US orders of $99 or more! Only $4.99 or $9.99 for economy service on US orders under $99. We cannot combine shipping on multiple orders. We can combine multiple items if you use the shopping cart. You will also receive free shipping on all orders over $99 with a discount applied in the eBay shopping cart (applies to contiguous US orders only). We ship out of our two warehouses in the United States located in Illinois and California. We will ship your order from the closest warehouse with inventory. Shipping times may vary based on shipping location. Hawaii orders will take 30-45 days for economy shipping. ORM-D and Lithium / Li-Po Battery Restrictions ORM-D items can only be shipped via ground delivery. Products of this nature include quarts of fuel, glues, paints, thinners, aerosol sprays, and certain lithium batteries. We cannot ship ORM-D items to Alaska, Hawaii, Puerto Rico, or other US Protectorates. Other restrictions may apply based on APO/FPO shipping rules. Payment We accept all major credit cards, PayPal, and Google Pay. Taxes may be applicable at checkout. Learn More Returns Returned merchandise must be in unused condition and in its original packaging. The mounting of engines and accessories, running fuel through engines, cutting or pushing out the balsa sheets in kits, and other similar actions constitutes used merchandise. Radios must be returned with unmounted servos and switch harness. Flammable or combustible materials or products (regardless of whether the item is open or unopened) such as: Nitro engines (if fuel has entered the engine), Nitro fuel, Unopened as well as opened, charged and / or used Lithium Ion / Polymer (LiPo) batteries and other Lithium-based batteries. Any type of opened, charged and / or used battery including LiPo, Nickel-Metal Hydride (NiMH), Nickel-Cadmium (NiCd), other Nickel-based batteries and / or Alkaline-based batteries. Sealed Lead Acid batteries. Paints, thinners, certain glues or cements/pastes. Aerosols or compressed gas canisters. Rockets, kits containing rockets with or without igniters, igniters, hobby fuel (both quart or gallon). When packing your order for return, please be sure all the original packing material and instruction papers and/or manuals are included. We will be unable to process your return if parts are missing, or if items are not packed properly to avoid damage to products and their boxes and/or packages. ARF kits are specially packaged to insure safe shipping of all contents. In order to receive credit for a returned ARF, the contents must be returned in the original plastic covers and arranged in a manner that will not damage the contents or packaging. Please contact us for a return authorization number by opening a return case on Ebay. Freight charges will not be refunded. The customer is responsible for insured shipping back to our shop. Returns sent COD will not be accepted. Omni Models reserves the right to charge a 15% restocking fee on any merchandise returned for credit. About Omni Models We are the home for all your hobby needs. Our FREE shipping and combined shipping discounts save you money. We offer FREE ground shipping on US orders of $25.00 or more! Only $3.99 or $9.99 for ground service on US orders under $25.00. We also offer expedited shipping and we ship internationally. At Omni Models, we help people have fun with hobbies. Providing an exceptional customer experience is a mission we take seriously. That's why, when it comes to radio control fun, we don't mess around. Please contact us through your original purchase on eBay. We're always striving to answer e-mails as quickly as possible.
Price: 11.4 USD
Location: United States
End Time: 2025-02-13T21:00:50.000Z
Shipping Cost: 4.99 USD
Product Images
Item Specifics
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Age Level: 17 Years & Up
MPN: RPM81522
Compatible Brand: For RPM
Color: Black
Brand: RPM
Compatible Fuel Type: Electric
Compatible Vehicle Type: Monster Truck
Type: Suspension Arms
Model: ARRMA Kraton 8S, ARRMA Outcast 8S