Quick answer
Choose RER43559 if you need a center transmission shaft for a VERTEX 10 or VERTEX 10 WIDE. Choose RER12638 if you need a rear upper link set for a WENDIGO or WENDIGO KIT. They serve different drivetrain and suspension roles and are not interchangeable.
Why these parts aren't interchangeable
RER43559 is a drivetrain component (center transmission shaft) while RER12638 is a suspension component (rear upper link set). They mount in completely different areas of the vehicle and serve distinct functions. Swapping one for the other is not physically possible, so your choice depends entirely on which part you need to replace or upgrade.
The RER43559 shaft is listed specifically for VERTEX 10 and VERTEX 10 WIDE vehicles. If you own one of these models and notice drivetrain noise or power loss, this shaft may be the worn part. The RER12638 link set is listed for WENDIGO and WENDIGO KIT models and addresses rear suspension geometry and stability.
Price and value considerations
At $6.74 (compared to $8.99), RER43559 is a moderately priced drivetrain spare. The RER12638 rear upper link set costs only $1.69 (compared to $2.77), making it one of the more affordable suspension replacements. Both offer savings versus their comparison prices, but the RER12638 is notably cheaper because it includes just two steel links rather than a machined shaft.
If you're on a tight budget and your WENDIGO needs a suspension refresh, the RER12638 is a low-cost fix. For VERTEX 10 owners, the RER43559 shaft is still reasonably priced for a drivetrain part that handles torque.
How to choose between RER43559 and RER12638
- If you drive a VERTEX 10 or VERTEX 10 WIDE: The RER43559 center transmission shaft is the correct replacement or spare for the drivetrain. No other Redcat part in this comparison serves that role.
- If you drive a WENDIGO or WENDIGO KIT: The RER12638 rear upper link set is the correct suspension replacement. It includes two steel links that directly fit the rear upper position.
- If you own a different Redcat model: Neither part is listed as compatible outside their specific vehicle families. Check your model's manual or parts diagram before ordering. Always verify part numbers against your vehicle's exploded view diagram to avoid returns.
Product facts at a glance
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RER43559: RER43559 is a center transmission shaft (1 piece) listed for VERTEX 10 and VERTEX 10 WIDE vehicles. If you own a VERTEX 10 model, this is the correct shaft to restore drivetrain function; it won't fit other Redcat platforms.
RER43559
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RER12638: RER12638 is a rear upper link set (2 steel links) listed for WENDIGO and WENDIGO KIT vehicles. This set directly replaces worn rear upper links on WENDIGO models, restoring rear suspension geometry without modification.
RER12638
Which part fits your build?
Best for
- VERTEX 10 or VERTEX 10 WIDE owners needing a center transmission shaft (RER43559)
- WENDIGO or WENDIGO KIT owners needing rear upper suspension links (RER12638)
Not for
- Owners of other Redcat models not listed as compatible with either part
- Anyone looking for a universal or cross-platform upgrade part
