Hardrace Harden Engine Mount Set – Subaru (5835)

Product Overview

While replacing individual mounts limits play in certain areas, high-torque boxer applications demand a unified, zero-deflection structural layout. The Hardrace Harden Engine Mount Set – Subaru (5835) is the definitive all-in-one drivetrain optimization package designed to lock down your entire powertrain.

This comprehensive 4-piece master kit includes both hardened rubber engine mounts along with a matching heavy-duty transmission mount and reinforced backing brackets. By anchoring the engine block and gearbox simultaneously using Hardrace’s proprietary high-density compound, this combo kit entirely eliminates engine rocking, and shifting misalignment—transmitting raw boxer torque directly to your symmetrical AWD system.

Key Features & Benefits

• Complete 4-Piece Master Package: Overhauls both lower engine mounts, the primary transmission mount, and structural base plates in a single comprehensive kit.

• Maximizes All-Wheel-Drive Traction: Pins the entire longitudinal boxer drivetrain in place, converting wasted engine-roll energy into immediate throttle response and forward momentum.

• Proprietary High-Density Hardened Rubber: Engineered with a track-tested, high-durometer rubber matrix that resists oil degradation and splitting without the cabin-shaking harshness of solid aluminum mounts.

• Eliminates Shifting Lockouts: By keeping the engine and gearbox mathematically parallel with your manual shift linkages under heavy load, this kit completely clears up gate entry at high RPMs.

• Reduces Stress on Exhaust Components: Prevents the downpipe flex pipes, header joints, and turbo flanges from absorbing violent engine-rocking forces.

• Direct Bolt-On Integration: CAD-CAM designed to utilize factory subframe holes, ensuring a hassle-free, true bolt-on installation.

Technical Specifications

Applications

This specific 4-piece master kit (Part Number: 5835) is engineered specifically for 5-Speed Manual Transmission (5MT) boxer configurations across classic and modern double-wishbone or MacPherson strut Subaru layouts:

• Subaru Impreza WRX / STI (1992–2000 GC / GF / GM Chassis — 5MT Models)

• Subaru Impreza WRX / STI (2001–2007 GD / GG Chassis — 5MT Models)

• Subaru Impreza WRX (2008–2013 GR / GV / GE / GH Chassis — 5MT Models)

• Subaru Forester 1st Gen (1997–2002 SF Chassis — 5MT Models)

• Subaru Forester 2nd Gen (2003–2008 SG Chassis — 5MT Models)

• Subaru Legacy / Outback 2nd Gen (1995–1998 BD / BG / BK Chassis — 5MT Models)

• Subaru Legacy / Outback 3rd Gen (1998–2002 BE / BH / BT Chassis — 5MT Models)

• Subaru Legacy / Outback 4th Gen (2003–2008 BL / BP Chassis — 5MT Models)

Fitment Limitation: This 4-piece kit is strictly configured for 5-speed manual (5MT) platforms. It will not fit 6-speed manual (6MT) STI models or later cable-driven VA series WRX chassis due to the specific footprint sizing of the transmission mount housing.

The Mechanical Advantage: Unifying the Drivetrain Arc

Upgrading your engine mounts while leaving a worn-out factory rubber transmission mount in place creates an aggressive mechanical mismatch. When your Subaru’s pistons kick horizontally, the front of the block is held stable by the fresh engine mounts, but the un-reinforced transmission tail case is allowed to twist violently over the rear crossmember. This mismatch twists the mechanical shift rod linkage out of true alignment, causing missed gears and placing intense torsional fatigue on the transmission casing itself.

The Hardrace 5835 Master Set provides the ultimate unified solution. By replacing all three main ground contact points simultaneously, the entire engine and transmission block tilt and pitch as a single, controlled unit. This dual-axis rigidity eliminates low-speed drivetrain shudder, curbs wheel hop during aggressive launches, and delivers a beautifully direct, crisp, and mechanical connection to your shift knob without filling your cabin with unbearable racing-poly noise.

Professional Full-System In-House Installation at JDMaster

Leave the Heavy Lifting to the Specialists: Dropping an entire Subaru drivetrain layout onto a fresh set of mounts requires removing under-braces, safely support-jacking the transmission casing, unbolting the front steering rack, and clearing tight exhaust header spacing.

Our master technicians will cleanly drop your crossmembers, press out any scaling hardware, seat the 4-piece master kit, and torque every fastener back to strict motorsport specs. Contact us today to lock in your appointment!

Warranty

The warranty on Hardrace products depends on the type of product, with a minimum warranty period of 2 years. This warranty does not cover damage caused by a car crash, improper use, negligence or normal wear and tear.