Perrin Weighted Ball Stainless Steel Shift Knob 2004-2021 STI | Adjustable Height | Precision Machined Shift Knob
Overview
The Perrin Weighted Ball Stainless Steel Shift Knob is designed specifically for the Subaru WRX STI models from 2004 to 2021, offering a substantial upgrade over the OEM shift knob. Its heavy steel construction provides increased mass—up to twice the weight of the factory knob—resulting in smoother, more precise shifts. This is especially beneficial when paired with aftermarket short shifters, where the added weight helps reduce shift effort and enhances overall transmission feel.
Engineered with precision machining and a durable raw brushed stainless steel finish, this shift knob combines both form and function. The multi-piece design includes a billet aluminum lower section that fits perfectly around the reverse lockout lever, ensuring a clean, OEM+ appearance. The built-in height adjustment screw allows drivers to customize the knob height by up to one inch, while a secure locking bolt guarantees the knob stays firmly in place without damaging the shifter threads.
For Subaru enthusiasts seeking a reliable, high-quality upgrade that improves tactile feedback and driving engagement, the Perrin Weighted Ball Shift Knob delivers a refined shifting experience. Its robust construction and adjustable design make it a practical and stylish addition to any WRX STI interior, enhancing both daily driving and spirited performance sessions.
Features & Specifications
This Perrin Weighted Ball Stainless Steel Shift Knob is engineered for Subaru WRX STI (2004-2021) and features a heavy steel body with adjustable height. Constructed from stainless steel and billet aluminum, it delivers enhanced shift smoothness and durability for enthusiasts seeking improved transmission feel and OEM+ quality.
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Brand: Perrin Performance
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Product: Weighted Ball Stainless Steel Shift Knob
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Part Number: PSP-INR-131-3
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Fitment: Subaru WRX STI (2004-2021)
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Material: Stainless Steel (main body), Billet Aluminum (lower piece)
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Finish: Raw Brushed Stainless Steel
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Construction: Precision Machined, Multi-piece Design
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Origin: Made in USA
Key Benefits
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Performance: Heavier knob mass smooths out shifts, reducing effort and improving transmission feel.
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Adjustability: Height can be adjusted up to 1 inch to suit driver preference and ergonomics.
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Durability: Raw brushed stainless steel finish resists wear and maintains appearance over time.
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Fitment: Designed specifically for 2004-2021 WRX STI models with precise fit around reverse lockout lever.
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Quality: Precision machining and multi-piece construction ensure a secure, thread-safe installation.
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Aesthetics: OEM+ styling with a clean, brushed metal look complements Subaru interiors.
What's Included
- 1× Perrin Weighted Ball Stainless Steel Shift Knob
- 1× Billet Aluminum Lower Piece (fits reverse lockout lever)
- Adjustment screw and locking bolt hardware
- Installation instructions
Installation & Compatibility
Installation of the Perrin Weighted Ball Shift Knob is straightforward and DIY-friendly, requiring only basic hand tools. The multi-piece design allows for easy height adjustment and secure locking without damaging the shifter threads. No special modifications are necessary, but verifying fitment for your specific WRX STI model year is recommended to ensure compatibility. This knob pairs exceptionally well with aftermarket short shifters but also improves feel on stock setups.
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Professional Installation: DIY-Friendly
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific WRX STI year (2004-2021)
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