Perrin Weighted Barrel Stainless Steel Shift Knob 2004-2021 STI | Heavyweight Design | Interior Upgrade
Overview
The Perrin Weighted Barrel Stainless Steel Shift Knob is a precision-engineered upgrade designed specifically for the Subaru WRX STI models from 2004 to 2021. This shift knob replaces the OEM unit with a heavier, solid stainless steel body that significantly improves shifting feel and smoothness. Ideal for enthusiasts running aftermarket short shifters or anyone looking to enhance their interior styling and shifting experience, this knob delivers both functional and aesthetic benefits.
Crafted with a focus on durability and performance, the knob features a multi-piece design combining a heavyweight stainless steel barrel with a billet aluminum lower section that fits precisely around the reverse lockout lever. The brushed stainless steel finish is not only visually appealing but also highly resistant to wear, ensuring long-lasting quality. The built-in height adjustment screw allows for up to 1 inch of customization, while the locking mechanism secures the knob firmly without damaging the shifter threads.
For Subaru WRX STI owners, this shift knob offers a tangible improvement in shift quality by adding mass to the shifter, which helps reduce shift effort and enhances the mechanical feel. The combination of precise machining, durable materials, and thoughtful design makes it a practical upgrade that complements the performance-oriented nature of the STI platform.
Features & Specifications
This Perrin Performance Weighted Barrel Stainless Steel Shift Knob is engineered for Subaru WRX STI (2004-2021) and features a heavyweight solid steel body with adjustable height. Constructed from brushed stainless steel and billet aluminum, it delivers enhanced shift smoothness and durability for Subaru enthusiasts seeking improved shifting feel and interior refinement.
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Brand: Perrin Performance
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Product: Weighted Barrel Stainless Steel Shift Knob
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Part Number: PSP-INR-131-2
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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: 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 reduces shift effort and smooths gear changes, especially with aftermarket short shifters.
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Durability: Brushed stainless steel finish resists wear and corrosion for long-lasting use.
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Fitment: Designed specifically for 2004-2021 Subaru WRX STI models with precise reverse lockout integration.
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Adjustability: Height can be adjusted up to 1 inch to suit driver preference and ergonomics.
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Quality: Precision machining and a secure locking mechanism ensure a solid, rattle-free installation without thread damage.
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Aesthetics: Clean, OEM+ style brushed finish enhances interior appearance with a subtle performance edge.
What's Included
- 1× Perrin Weighted Barrel Stainless Steel Shift Knob
- 1× Billet Aluminum Lower Piece (fits reverse lockout lever)
- Adjustment screw and lock bolt hardware
- Installation instructions
Installation & Compatibility
Installation of the Perrin Weighted Barrel Shift Knob is straightforward and generally DIY-friendly for enthusiasts with basic hand tools. The multi-piece design allows for easy assembly and precise fitment around the reverse lockout lever. No special tools are required beyond standard hex keys. The built-in locking mechanism secures the knob firmly without damaging the shifter threads, ensuring a reliable fit. This shift knob is compatible exclusively with Subaru WRX STI models from 2004 through 2021. No tuning or additional modifications are required for installation.
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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 STI model year
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