Part Number: KB-066-LOCK

Description: Kartboy Rear Lockdown Bolts

Fitment: 02-07 Subaru WRX / STI

Details:

Eliminate Subframe Slop and Rear-End Squat Under Load
In spirited driving, hard acceleration, and aggressive cornering, factory rubber subframe bushings allow significant rear subframe movement. The Kartboy Rear Subframe Lockdown Bolts (KB-066-LOCK) lock the rear subframe directly to the unibody chassis, eliminating dynamic alignment shifts and wheel hop for a planted, predictable rear end.

Precision CNC-Machined Sleeves & High-Tensile Bolts
Designed to utilize factory service holes in the unibody frame rail, this kit centers and locks down the subframe using CNC-machined alignment sleeves and heavy-duty fasteners. By eliminating flex at the main subframe mounting points, power transfer to the rear wheels becomes instantaneous without requiring subframe removal or permanent modification.

What's Included:

• Lockdown Bolts: High-Tensile Steel Subframe Bolts (Set of 2) [Part # KB-066-LOCK]

• Sleeves: CNC-Machined Precision Alignment Bushing Sleeves (Set of 2)

Key Features:

• Eliminates Subframe Movement: Prevents lateral and rotational subframe shift under heavy torque and hard cornering.

• Reduces Wheel Hop: Stabilizes rear drivetrain alignment to minimize wheel hop and axle tramp during launches.

• Direct Bolt-On Installation: Threads directly into existing factory chassis locations—no drilling, cutting, or subframe removal required.

• Preserves Suspension Geometry: Locks the rear subframe in place to maintain accurate suspension alignment angles during aggressive driving.

• Made in USA: Designed, machined, and packaged in the USA by Kartboy.