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One Kit To Fix Every Soft Bushing In Your FR-S Chassis
The FR-S ships with rubber bushings throughout the front control arms, steering rack mounts, rear control arms, trailing arms, and subframe, and every one of them deflects under hard cornering. Chasing that play one bushing at a time wastes money and still leaves gaps in the chassis. The SuperPro SPRKIT174K master kit replaces the front and rear bushings across all of those key mounting points in a single purchase, tightening the whole chassis at once instead of piecemeal.
Key Features
- Full front and rear enhancement kit covering 8 separate bushing positions in one purchase
- Front control arm lower-inner front and rear bushings replace soft factory rubber for sharper turn-in
- Front steering rack and pinion mount bushings tighten steering feel and reduce play
- Rear control arm lower-inner and upper-inner bushings improve rear end stability under load
- Rear trailing arm front and rear bushings reduce unwanted toe change during cornering
- Rear toe control arm inner bushing and rear crossmember insert enhancement kit round out the rear suspension upgrade
- Polyurethane construction resists the oil, grease, and heat that degrade factory rubber over time
- MPN SPRKIT174K is purpose-built as a matched set, not a random assortment of individual bushings
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2013-2016 | Scion | FR-S |
Specifications
| Detail | Value |
|---|---|
| MPN | SPRKIT174K |
| Brand | SuperPro |
| Kit Type | Front and rear vehicle master bushing kit |
| Material | Polyurethane |
| Included Positions | 8 (front control arm, steering rack, rear control arms, trailing arms, toe arm, subframe insert) |
| Warranty | Lifetime warranty on SuperPro polyurethane bushings |
| UPC | Not published by manufacturer |
What's Included
- Front Control Arm Lower-Inner Front and Rear Bush Kit
- Front Steering Rack and Pinion Mount Bush Kit
- Rear Control Arm Lower-Inner Bush Kit
- Rear Control Arm Upper-Inner Bush Kit
- Rear Trailing Arm Front Bush Kit
- Rear Trailing Arm Rear Bush Kit
- Rear Toe Control Arm Inner Bush Kit
- Rear Crossmember Insert Enhancement Kit
About SuperPro
SuperPro has manufactured performance polyurethane suspension bushings since the 1970s, engineering replacement components that correct the inherent weaknesses of factory rubber bushings. The SPRKIT174K master kit was developed specifically for the FR-S, BRZ, and 86 platform to deliver a complete chassis bushing refresh in a single part number rather than requiring separate purchases for each mounting position.
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FAQ
What is the SPRKIT174K?The SPRKIT174K is a SuperPro master bushing kit that replaces the factory rubber bushings across 8 front and rear mounting positions on the Scion FR-S, delivering a complete chassis refresh in one part number.
Does this kit fit the Subaru BRZ or Toyota 86 as well?SuperPro sells this kit across the shared FR-S, BRZ, and 86 platform, but this listing is scoped specifically to the 2013-2016 Scion FR-S.
Do I need to buy anything else to complete the bushing upgrade?No, this master kit includes all 8 bushing kits needed to cover the front control arms, steering rack mounts, rear control arms, trailing arms, and rear subframe inserts in one purchase.
Will installing this kit require a full alignment afterward?Yes, since this kit touches multiple front and rear suspension mounting points, a full four-wheel alignment is strongly recommended after installation.
Does the rear crossmember insert kit require removing the entire subframe?No, the rear crossmember insert kit is designed to install without removing the subframe, retaining the factory rubber subframe bushings while still delivering most of the performance benefit.
Is this kit covered under warranty?Yes, SuperPro backs its polyurethane bushings with a lifetime warranty to the original purchaser, and off-road, motorsport, and track use does not void coverage.
Can this kit be installed at home or does it need a shop?Experienced DIY mechanics with a shop press or bushing tool set can install most of this kit at home, though several positions benefit from a lift and a helper due to the number of components involved.
How is this different from buying individual bushing kits separately?Buying the SPRKIT174K as a master kit is more cost-effective than purchasing all 8 individual bushing kits separately, and ensures every major deflection point in the chassis is addressed in one job.
Install Instructions
- Raise and safely support the vehicle on all four corners
- Remove the front control arms and steering rack mounting hardware to access the front bushing positions
- Press out the worn factory rubber bushings and press in the new SuperPro polyurethane bushings at each front position
- Remove the rear control arms and trailing arms to access the rear bushing positions
- Press out the factory bushings and install the new SuperPro bushings at each rear control arm and trailing arm position
- Install the rear toe control arm inner bushing and the rear crossmember insert enhancement kit per the included instructions
- Reinstall all control arms, torquing every fastener to factory specification
- Lower the vehicle and have a full four-wheel alignment performed before resuming normal driving
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