AMS Performance AMS.50.06.0004-1 Weighted Carbon Fiber Shift Knob for Subaru

Vehicle Fitment

• 2004-2007 Subaru WRX STI (GD, 6-speed manual)
• 2008-2014 Subaru WRX STI (GR, 6-speed manual)
• 2015-2021 Subaru WRX STI (VA, 6-speed manual)
• 2015-2021 Subaru WRX (VA, 6-speed manual)
• 2022-2025 Subaru WRX (VB, 6-speed manual)

Features

• Weighted carbon fiber shift knob designed for enhanced shifting feel
• 40 mm increased height compared to OEM for a more ergonomic grip
• Approximately 51 % heavier than stock shift knob for improved momentum during shifts
• Threaded steel core for secure fit and durability
• Real carbon fiber construction for lightweight strength and premium look
• Improves shifting throw and keeps knob closer to driver's hand
• Enhances driver engagement and precision in gear changes
• Easy install with no modifications required

Specifications

• Brand: AMS Performance
• Part Number: AMS.50.06.0004-1
• Type: Weighted carbon fiber shift knob
• Material: Carbon fiber with threaded steel core
• Height Increase: +40 mm over OEM
• Weight: ~302 g (approx. 51 % heavier than OEM)
• Fitment: 6-speed manual Subaru WRX/STI
• Finish: Gloss carbon fiber

Included Components

• 1x AMS Performance weighted carbon fiber shift knob
• Installation instructions

Product Description

The AMS Performance AMS.50.06.0004-1 Weighted Carbon Fiber Shift Knob is a premium interior upgrade designed for Subaru WRX and WRX STI models equipped with a 6-speed manual transmission. This knob features a real carbon fiber exterior paired with a threaded steel core, giving it both lightweight strength and a robust feel. With an approximate 40 mm increase in height and roughly 51 % more weight than the stock shift knob, it delivers a more positive and confident shift feel - ideal for spirited driving on both street and track.

Installation is straightforward - the weighted knob threads directly onto the factory shifter without any special tools or modifications. Its ergonomic design brings the knob closer to your hand and improves gear-shift feel and precision, making shifts smoother and more engaging. The premium carbon fiber finish also enhances the interior aesthetic of your Subaru, blending performance functionality with motorsports-inspired styling.