SPL Parts 2015+ Subaru WRX/STI Rear Traction Arms

If you're pushing your 2015-2021 Subaru WRX or STI hard, especially during launches or aggressive cornering, you know how much rear-end instability can affect performance. These SPL Parts Rear Traction Arms are designed to lock down that rear suspension geometry, giving you a more predictable and responsive feel when you need it most. They work by eliminating the unwanted flex that factory bushings allow under heavy load, which is a common cause of wheel hop and vague handling.

SPL has built these arms using a strong, lightweight Billet 6061-T6 Aluminum main body. The arms are length-adjustable, allowing you to precisely tune the rear suspension's bump steer and anti-squat characteristics for your specific setup. Inside, you'll find durable 3-piece FK Bearings rod ends with a Teflon liner. This liner is key to providing smooth articulation with very low friction and a high load capacity, all while keeping noise down and ensuring reliable operation across a wide temperature range, from cold street driving to hot track sessions. The hardware is anodized titanium, further reducing unsprung weight and resisting corrosion.

This set includes a pair of adjustable traction arms, ready to be installed on your WRX or STI. They are proudly made in the USA, reflecting a commitment to quality and performance for both street and track use.