Quick answer
Redcat part numbers RER15550 (chrome rear axle housing) and 510137 (lower hinge pins) serve different purposes and fit specific vehicle models. Use this guide to match the right part to your repair or upgrade need.
Why part numbers matter for Redcat repairs
Redcat Racing uses part numbers like RER15550 and 510137 to identify exact components for specific vehicle models. Using the wrong part can lead to poor fit or performance issues, so verifying compatibility before ordering saves time and money.
Both parts listed here are genuine Redcat replacements, but they are not interchangeable. One is an upgrade housing for the MONTE CARLO, the other is a wear-and-tear suspension pin for the RC‑MT10E and TR‑MT10E.
When to choose each part
If you own a Redcat MONTE CARLO and want to replace or upgrade the rear axle housing, RER15550 is the correct chrome-finished housing with a differential cover. It is sold as a one-set part under the Hop Ups and Spare Parts category.
For RC‑MT10E or TR‑MT10E owners experiencing loose steering or worn hinge pins, 510137 is the direct-fit lower hinge pin set. It includes two pins and restores smooth steering performance.
Frequently asked questions about Redcat part numbers
How do I know which Redcat part number fits my vehicle?
Check the compatibility list in the product description. RER15550 fits the MONTE CARLO. 510137 fits RC‑MT10E and TR‑MT10E. If your vehicle is not listed, contact Redcat support or consult the manual.
Can I use RER15550 on a different Redcat model?
Redcat lists RER15550 specifically for the MONTE CARLO. Using it on other models is not guaranteed to fit, as axle housing dimensions vary between chassis. Always verify compatibility before ordering.
What does the part number format tell me?
RER-prefix numbers (like RER15550) are often used for hop-up or spare parts. Numeric-only numbers (like 510137) are typically replacement or service parts. The format helps you identify the part category quickly.
Are these parts available individually or only in sets?
RER15550 is sold as a one-set part (includes housing and diff cover). 510137 is a set of two pins. Neither is available as a single unit. Order the full set to ensure you have all required components.
What if my part number is not listed here?
Use the Redcat part number lookup on the store site or search by vehicle model. If you cannot find a match, contact Redcat customer service with your vehicle model and year. Keep your vehicle manual handy for reference.
Product facts
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RER15550: Redcat Racing RER15550 is a chrome rear axle housing with a differential cover, offered as a one-set part for the MONTE CARLO. This part is both a spare and a hop-up upgrade, giving your MONTE CARLO a chrome finish while replacing the housing.
RER15550
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510137: Redcat Racing Lower Hinge Pins (510137) are a set of two replacement pins designed for the lower arm hinge of the RC‑MT10E and TR‑MT10E. These pins directly restore smooth steering when the original pins wear out, and they are built to original specifications.
510137
