GrimmSpeed 380001 Universal Stainless Shift Knob (M12x1.25) - 675 g Weighted

Vehicle Fitment

• Manual-transmission cars with M12x1.25 shifter threads - common on many Subaru 5-speed and 6-speed transmissions (WRX, STi, BRZ, etc.)

Features

• Heavy 675 g stainless-steel construction for improved shift feel and momentum
• Hybrid ergonomic design - comfortable for both overhand and side-grip shifting styles
• Machined from 304 stainless steel for durability and long-term corrosion resistance
• Laser-etched base with "GrimmSpeed" branding for authenticity and finish detail
• Powder-coat finish option available (black, red, neon green) for aesthetic customization
• Direct-fit M12x1.25 thread - installs easily on compatible manual shifters with no adapters needed
• Weighted knob reduces shift throw inertia and provides smoother, more deliberate gear changes
• Simple bolt-on install - no wiring or modifications required

Specifications

• Part Number: 380001
• Material: 304 Stainless Steel
• Weight: 675 g
• Thread Size: M12 x 1.25
• Finish: Raw stainless or powder-coat (color options available)
• Compatibility: Universal fit for manual-transmission shifters with M12 x 1.25 threads
• Installation: Thread-on, no modifications required

Included Components

• 1x GrimmSpeed 380001 Shift Knob

Product Description

The GrimmSpeed 380001 Universal Stainless Shift Knob is a simple yet high-impact interior upgrade for manual-transmission performance cars. With its substantial 675 g stainless-steel construction and machined finish, the knob gives each gear shift a more solid, weighted feel - enhancing the tactile feedback and helping to smooth out shifts under spirited driving or high-RPM conditions. The ergonomic hybrid shape is comfortable whether you prefer overhand or side-grip shifter control, offering flexibility for different driving styles.

Installation is trivial: thanks to the standard M12x1.25 threading, you simply thread the knob onto the shifter - no adapters or modifications needed. Because it's made from corrosion-resistant stainless steel and optionally finished with a powder-coat, the 380001 knob offers long-term durability and a clean, OEM-plus aesthetic that fits well in any sport-oriented interior. For drivers who value refined shift feel, added shift momentum, and a premium tactile upgrade, this knob is one of the most popular and reliable choices in the aftermarket.