Yellow Speed Racing Premium Competition Coilovers – 2008-2014 Subaru STI

Yellow Speed Racing Premium Competition Coilovers – 2008-2014 Subaru STI

Track-Tuned Spring Rates for Competition Use
The Yellow Speed Racing Premium Competition coilovers are designed for vehicles that regularly participate in track events and competition racing. Stiffer spring rates and larger valving than the Dynamic Pro Sport line deliver more controlled chassis behavior under sustained high-speed cornering, hard braking, and rapid direction changes. Pillowball upper mounts on both front and rear (with optional camber plate configuration) provide the alignment range needed for dedicated track setups.

Application Notes

• Front Lower Mount Clevis Width = 30mm
• Fits 08-14 STI Sedan & Hatchback Models Only
• Please choose your preferred Rear Upper Mount when ordering
• Solid Aluminum is equipped with hardened rubber bushings for noise reduction

Stiffer Springs, Larger Valving
The Premium Competition kit uses higher spring rates than the Dynamic Pro Sport, calibrated through years of testing and competition feedback. Lightweight alloy aluminum lower mounts reduce unsprung weight, and the 33-way damping adjustment covers the range from controlled street driving to aggressive track use. The kit is intended for drivers who prioritize outright handling performance and are willing to accept a firmer ride in exchange.

Tested at the Competition Level
Each application is test fitted and road tested before release. The Premium Competition spring and damping specifications represent the outcome of ongoing development through real competition use across multiple platforms.

Why Choose Yellow Speed Racing
Yellow Speed Racing has been engineering suspension systems since 2003, with development rooted in competitive motorsport. Their coilovers are used across circuit racing, drift competition, rally, and time attack globally. Every kit is hand-assembled to order, with vehicle-specific valving and fitment validated through real-world testing. The Premium Competition line represents Yellow Speed’s development work applied to serious track use — a step up from the Dynamic Pro Sport in both spring rate and internal specification.

The RallySport Take

The Premium Competition is the correct choice for WRX, STI, BRZ, and 86 builds that spend meaningful time on circuit. The higher spring rates and larger valving make a noticeable difference in high-speed stability and predictability under sustained track use compared to the Dynamic Pro Sport. Not ideal as a daily driver — but that is the tradeoff for a dedicated track setup at this price point.

What’s in the Box

• 4x coilover assemblies (2 front, 2 rear)
• Pillowball front upper mounts with adjustable camber plates
• Pillowball rear upper mounts (with optional camber plate — select at order)
• 33-way adjustable damping on all four corners
• Lightweight alloy aluminum lower mounts
• Full-length ride height adjustment
• Spanner wrenches
• All mounting hardware

Note: Yellow Speed Racing coilovers are hand-built to order. Estimated lead time is 2-3 weeks. Contact us for current lead times at [email protected]. Product photos are representative — actual finish and appearance may vary slightly by production run.

Fitment