Yellow Speed Racing Advanced Pro Plus Racing Circuit Spec Coilovers – 2008-2014 Subaru STI

Yellow Speed Racing Advanced Pro Plus Racing Circuit Spec Coilovers – 2008-2014 Subaru STI

Top-Tier Motorsport Suspension for Competitive Circuit Racing
The Yellow Speed Racing Advanced Pro Plus Racing Circuit Spec is the top of the Yellow Speed coilover lineup — a full motorsport-grade suspension system developed specifically for competitive circuit racing. Built with input from professional drivers and race engineers, it is available in both 2-way (rebound and compression) and 3-way (independent high-speed compression, low-speed compression, and rebound) configurations. Each kit is assembled to order with vehicle-specific valving and spring rates for high-grip tarmac use.

Application Notes

• Front Lower Mount Clevis Width = 30mm
• Fits 08-14 STI Sedan & Hatchback Models Only

2-Way and 3-Way Circuit-Specific Configurations
The 2-way configuration provides independent rebound and compression adjustment for serious track day and club racing use. The 3-way configuration adds separate high-speed and low-speed compression control, allowing precise tuning for different circuit layouts, track surfaces, and driving styles — the correct choice for competitive time attack, endurance, or circuit sprint events where setup optimization between sessions is part of the program.

Inverted Front Monotube Design
The front dampers use the inverted monotube design for reduced unsprung weight, increased shock fluid capacity, and improved shaft seal durability. Rear upper mount options include aluminum with hardened rubber or pillowball — select at order based on the build’s alignment and NVH requirements.

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 Advanced Pro Plus Racing Circuit Spec represents the outcome of Yellow Speed’s competition development program — a kit designed for drivers who need the best Yellow Speed produces.

The RallySport Take

This is Yellow Speed’s flagship coilover, and it is priced accordingly. For competitive circuit racing where outright performance and setup precision are the priorities, the Advanced Pro Plus Circuit Spec delivers the adjustability and specification to match. The 3-way configuration is the right choice for dedicated competition builds; the 2-way for serious track day use where full session-to-session tuning is less critical.

What’s in the Box

• 4x coilover assemblies (2 front inverted, 2 rear standard)
• Pillowball front upper mounts with adjustable camber plates
• Rear upper mount: aluminum w/ hardened rubber or pillowball (select at order)
• 2-way or 3-way adjustable damping (select at order)
• Adjustable front endlinks
• 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