Billetworkz Weighted Shift Knob STI 6-Speed Engraving Subaru STI 2004-2021 / WRX 15-26-Matte Black Lightbulb | BW-KNB-STI6-SSTI-MBLK-LB Vehicle Model_Q50 They all feature FKM (Viton)

They all feature FKM (Viton) O-rings for all oil and fuel types

Quantity: Four (4)

Default Spring Rates: Front 14k Rear 8k

The kit includes everything you need for the conversion:

Part #: ABW-FF-0203FRONT2PC60MMREC-SED

Billetworkz Weighted Shift Knob STI 6-Speed Engraving Subaru STI 2004-2021 / WRX 15-26-Matte Black Lightbulb | BW-KNB-STI6-SSTI-MBLK-LB Vehicle Model_Q50 They all feature FKM (Viton)Fitment Information: 2004 2021 Subaru STI 2015 2026 Subaru WRX Please note: This item is for 6 speed manual transmission models only. It does not fit models with CVT Automatic transmission. Features: Add style and color to your interior with the Billetworkz Weighted 6 Speed Shift Knob. This shift knob is designed to replace your oem knob for smooth shifting while keeping full reverse lockout functionality. Each knob is CNC machined, properly cleaned,