DarkMatterX DM-1 Ultimate Shifter Kit (Red Shift Boot) - 2015-2021 Subaru STI

The DM-1 Shifter: A New Standard

Driven by a relentless passion to elevate performance, the DM-1 Shifter is the ultimate evolution of shifting technology for the 2015–2021 Subaru STI. Handcrafted in the USA by DARKMATTERX, this complete replacement for the stock shifter assembly delivers crisp, precise gear changes every time. Designed to forge a stronger connection between driver and machine, it transforms every shift into a mechanical masterpiece.

 

Premium Kit Components

The DM-1 Ultimate Shifter Kit includes the DM-1 Shifter, DM-1 Precision Shift Arm, DM-1 Shifter Box, and an Alcantara Shift Boot. Each piece is engineered for both performance and refinement. The shifter box, built specifically for 2008–2021 STI applications, features a carbon fiber nylon body paired with closed-cell foam and rubber seals to block out heat and noise. A CNC-cut stainless plate, corrosion-resistant hardware, and a laser-engraved finish highlight its strength and design. Completing the setup, the Alcantara Shift Boot—crafted from genuine Italian Alcantara—brings an upscale, suede-like texture commonly found in high-end European sports cars.

 

Engineered for Precision

The DM-1’s design is packed with innovations that set it apart. Its chassis-mounted construction locks the shifter firmly in place for maximum stability, using factory mounting points with no modifications required. The billet aluminum centering system, featuring dual detents and a ceramic-coated torsion spring, guarantees accurate gear engagement and eliminates missed shifts. With the tool-free adjustable shift height, drivers can easily fine-tune knob position by rotating the boot collar—no disassembly needed.

Adding to its refinement, a fully integrated reverse lockout eliminates the OEM cable while improving feedback and rigidity for 5th, 6th, and reverse selection. The reinforced 1st/2nd gear stop provides a firm, confident feel, while compatibility with OEM Subaru shift knobs ensures seamless customization. Every unit is hand-assembled and tested by DARKMATTERX to meet the strictest standards of quality, performance, and longevity.

 

DETAILS:

• Built in the USA by DARKMATTERX for 2015–2021 Subaru STI

• Complete OEM replacement with precise, responsive shifts

• Rigid chassis-mounted design installs with no modifications

• Precision centering system with dual detents and torsion spring

• Adjustable shift height with over 1" range, no tools required

• Integrated reverse lockout removes OEM cable for added accuracy

• Strengthened 1st/2nd gear stop for a solid, confident feel

• Compatible with all OEM Subaru shift knobs

• Shifter Box (2008–2021 STI): carbon fiber nylon body, sealed for heat/noise control, CNC stainless plate

• Alcantara Shift Boot crafted from genuine Italian Alcantara

• Each unit hand-assembled and quality-tested for reliability

 

Kit Components:

• DM-1 V3 Shifter (DM1-008-BLK)
• DM-1 Shifter Box (SB1-008-BLK) 
• DM-1 Precision Shift Arm (DPS-08S-BLK)
• Red Shift Boot Alcantara w/ Stitching Subaru STI (2015-2021)