How to Install the DM1 Ultimate Shifter Kit Subaru STI (2015–2021) | Full Step-by-Step Guide

Описание: In today’s video, Erik from DARKMATTERX walks you through a full step-by-step installation of the DM1 Ultimate Shifter Kit on a 2019 Subaru STI.

This guide covers everything you need to know for 2015–2021 STI models — and the install process is the same for 2008–2014 STI kits (only the shift boot differs). Whether you're upgrading for shorter throws, improved precision, or a cleaner driving feel, this video will serve as your complete install resource.

Huge shoutout to Paradigm Automotive in Boise, Idaho for providing the shop space and support to make this install possible. They specialize in Subaru performance — from bolt-ons to full engine builds and tuning.

✅ What’s Covered in This Video:
What comes in the DM1 Ultimate Shifter Kit
Required tools for installation
Interior disassembly
Removing the factory shifter assembly
Installing the DM1 shifter box & precision shift arm
Reverse lockout bracket install
Shift stop adjustment (CRITICAL STEP)
Alcantara shift boot installation
Proper shifter height adjustment
If you have questions about installation, reach out to:

📧 [email protected]

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⏱ Timestamps
00:33 – DM1 Kit Overview (Model Compatibility)
02:49 – Tools Required for Install
03:25 – Removing Center Console
05:57 – Removing Shift Knob & Interior Trim
06:48 – Final Interior Removal Before Going Under Car
07:53 – Pro Tip: Put Car in 6th Gear
08:13 – Under the Car: Remove O2 Sensor
08:47 – Removing Heat Shield
09:50 – Removing Factory Shifter Assembly
12:36 – Removing Roll Pin from OEM Shift Arm
14:30 – OEM Shifter Fully Removed
15:05 – Preparing the DM1 Shifter Box
16:43 – Installing Shifter Box Under Car
17:47 – Installing DM1 Shifter Assembly
18:29 – Installing Precision Shift Arm & Thrust Washers
21:47 – Installing Upper Mounting Hardware
23:42 – Securing Shifter Box from Underneath
24:47 – Installing Protective Rubber Boot
27:35 – Reinstalling Roll Pin
28:03 – Securing Hose Clamps
28:51 – Reinstall Access Panel
29:35 – Installing Reverse Lockout Bracket
31:59 – Reinstall Heat Shield & O2 Sensor
32:24 – Installing Final Hardware & Bushings
33:44 – Tightening Shift Arm Connection (Important Adjustment)
35:23 – Setting the First Gear Shift Stop
37:51 – Ensuring Proper First/Second Gear Wiggle
38:18 – Installing Premium Alcantara Shift Boot
39:21 – Adjusting Shifter Height
40:06 – Reassembling Interior