SKU: KDT984 | UPC: 9319924468874
Whiteline Front Transmission Mount Insert Bushing Kit for Multiple Subaru Models (WRX / STI / Forester XT / Legacy GT)
The Whiteline KDT984 front transmission mount insert bushing kit dramatically reduces drivetrain movement and wheel hop on 2002–2021 Subaru WRX, STI, Forester XT, Legacy GT, and Outback XT models with 5-speed or 6-speed manual transmissions, featuring high-durometer polyurethane inserts that fill the voids in the factory rubber mount for sharper throttle response, crisper shifts, and improved traction under hard acceleration without the harshness of solid mounts.
Designed as a true “insert” that installs in minutes using basic hand tools, the KDT984 eliminates the excessive slop common in aged factory mounts while maintaining NVH levels close to stock. The bright red 95A durometer polyurethane resists oil and heat for lifelong performance and is the #1 selling transmission bushing upgrade trusted on thousands of tuned Subarus worldwide.
For WRX/STI owners demanding maximum drivetrain control with daily-driver comfort, the Whiteline KDT984 is the ultimate bolt-in solution for eliminating wheel hop and improving launch consistency.
Key Features
- 95A red polyurethane insert bushings
- Reduces transmission movement & wheel hop
- Sharper throttle response & crisper shifts
- 10-minute install – no mount removal required
- Maintains near-stock NVH levels
- Lifetime warranty
Product Notes
- Fits manual transmission models only
- Multiple Subaru applications 2002–2021
- Front transmission mount (pitch stopper) insert
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime to original purchaser.
Installation Notes
- Professional installation not required
- Jack vehicle & support transmission
- Insert bushings into factory mount voids
- 10–15 minute install time
This Part Fits
| Year | Make | Model | Transmission |
|---|---|---|---|
| 2002–2021 | Subaru | WRX / STI | 5MT / 6MT |
| 2004–2013 | Subaru | Forester XT | 5MT / 6MT |
| 2005–2009 | Subaru | Legacy GT / Outback XT | 5MT / 6MT |
Note: Fits manual transmission models only. Front pitch stopper mount insert.
What’s Included in the Purchase
- (2) Red Polyurethane Insert Bushings
- Installation Instructions
- Part Number: Whiteline KDT984
Why Choose Whiteline?
- Over 30 years of suspension & chassis leadership
- Australian-engineered & race-proven
- Limited lifetime warranty
Frequently Asked Questions
- Q: Increases NVH?
A: Slight much less than solid mounts - Q: Fits auto trans?
A: No, manual transmission only - Q: Install difficulty?
A: Easy 10-minute job
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Protective retail bag.
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