DarkMatterX DM-1 Precision Shift Arm - 2008-2021 Subaru STI

DarkMatterX DM-1 Precision Shift Arm - 2008-2021 Subaru STI

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Features:

• Replaces OEM shift arm for precise shifting

• Needle bearing u-joint removes side play

• Preloaded bearings for smooth engagement

• Rubber boot shields u-joint from elements

• CNC billet joint enhances lateral movement

• Delivers a tighter, gated shift feel

• Cerakote and anodized for durability

• Resistant to wear, corrosion, and damage

• Designed for 2008-2021 Subaru STI models

DM-1 Precision Shift Arm

The DM-1 Precision Shift Arm replaces the entire OEM shift arm to deliver the most accurate and responsive shifting experience when paired with the DM-1 V2 Shifter. Featuring a precision needle bearing u-joint, this design removes all left-and-right play that is commonly found in stock components. A billet mechanical joint enhances the feel further, creating a smoother, more gated shifting experience. To ensure long-term durability, the shift arm is finished with Cerakoting, anodizing, and even a protective rubber boot for the u-joint.

 

Needle Bearing U-Joint

Unlike OEM and many aftermarket options, the DM-1’s needle bearing u-joint requires no assembly. It comes preloaded with needle bearings for instant, smooth movement and eliminates the slop present in stock designs. Other aftermarket setups often struggle with binding because they cannot fully tighten connections, but this design avoids those issues entirely. A rubber boot is also included to shield the u-joint from dirt, moisture, and wear caused by environmental exposure.

 

Billet Mechanical Joint

The DM-1 also incorporates a CNC-machined billet aluminum and steel mechanical joint, crafted for maximum precision. This addition improves left-and-right shift motion, resulting in smoother, more controlled movements through the shift pattern. By enhancing lateral motion, the driving experience feels tighter, more direct, and closer to a gated mechanism.

 

Protective Finishes

To ensure the shift arm endures a lifetime of use, the DM-1 is treated with both a Cerakoted and anodized finish. These protective coatings safeguard the metal components from corrosion, wear, and environmental damage, keeping performance consistent over time while maintaining a premium look and feel.

 

*Pictured DM-1 V2 Shifter not included