PSC MOTORSPORTS | BIG BORE XD® Cylinder Assist® Steering Kit | 2007–2011 Jeep Wrangler JK/JKU 3.8L
PSC MOTORSPORTS | BIG BORE XD® Cylinder Assist® Steering Kit | 2007–2011 Jeep Wrangler JK/JKU 3.8LPART#: PART#: PSC-SK688R38JP1-6.75W-1.25
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PSC MOTORSPORTS | BIG BORE XD® Cylinder Assist® Steering Kit | 2007–2011 Jeep Wrangler JK/JKU 3.8L
Description
If you’re running lockers, big axles, and 40s on your JK, your factory steering isn’t going to cut it. PSC’s BIG BORE XD Cylinder Assist Steering Kit is the ultimate upgrade for 2007–2011 Jeep Wrangler JK/JKU 3.8L owners who demand serious steering performance. Built for Jeeps with locking differentials, aftermarket axles, and tires up to 44", this kit delivers the torque and control you need on the toughest trails.
Every kit includes our BIG BORE XD Steering Gear, a high-performance pump kit with remote reservoir, a Cylinder Assist kit, and all the hardware you need for a clean install. Say goodbye to steering play, pump overheating, and white-knuckle turns when your lockers are engaged.
Application Requirements
Jeep Wrangler JK 3.8L (2007–2011), 2-door or 4-door Designed for rigs with lockers, aftermarket axles, and up to 44" tires
Available Configurations
| Manufacturer Part Number | Configuration | Instructions |
|---|---|---|
| SK688R38JP1-6.75W-1.25 | Aftermarket / 6.75" / 1-1/4" | Product installation guide |
| SK688R38JP1-6.75W-1.375 | Aftermarket / 6.75" / 1-3/8" | Product installation guide |
| SK688R38JP1-6.75W-1.5 | Aftermarket / 6.75" / 1-1/2" | Product installation guide |
| SK688R38JP1-6.75W-1.5OS | Aftermarket / 6.75" / 1-1/2" OS | Product installation guide |
| SK688R38JP1-6.75W-1.625 | Aftermarket / 6.75" / 1-5/8" | Product installation guide |
| SK688R38JP1-6.75W-1.75 | Aftermarket / 6.75" / 1-3/4" | Product installation guide |
| SK688R38JP1-6.75W-2.0 | Aftermarket / 6.75" / 2" | Product installation guide |
| SK688R38JP1-6.75W-NC | Aftermarket / 6.75" / No Clamp | Product installation guide |
| SK688R38JP1-7.5W-1.75 | Aftermarket / 7.5" / 1-3/4" | Product installation guide |
| SK688R38JP1-7.5W-NC | Aftermarket / 7.5" / No Clamp | Product installation guide |
| SK688R38JP1-8.0W-1.25 | Aftermarket / 8" / 1-1/4" | Product installation guide |
| SK688R38JP1-8.0W-1.375 | Aftermarket / 8" / 1-3/8" | Product installation guide |
| SK688R38JP1-8.0W-1.5 | Aftermarket / 8" / 1-1/2" | Product installation guide |
| SK688R38JP1-8.0W-1.5OS | Aftermarket / 8" / 1-1/2" OS | Product installation guide |
| SK688R38JP1-8.0W-1.625 | Aftermarket / 8" / 1-5/8" | Product installation guide |
| SK688R38JP1-8.0W-1.75 | Aftermarket / 8" / 1-3/4" | Product installation guide |
| SK688R38JP1-8.0W-2.0 | Aftermarket / 8" / 2" | Product installation guide |
| SK688R38JP1-8.0W-NC | Aftermarket / 8" / No Clamp | Product installation guide |
| SK688R38JP1-OE-1.25 | OEM / 6.75" / 1-1/4" | Product installation guide |
| SK688R38JP1-OE-1.375 | OEM / 6.75" / 1-3/8" | Product installation guide |
| SK688R38JP1-OE-1.5 | OEM / 6.75" / 1-1/2" | Product installation guide |
| SK688R38JP1-OE-1.625 | OEM / 6.75" / 1-5/8" | Product installation guide |
| SK688R38JP1-OE-1.75 | OEM / 6.75" / 1-3/4" | Product installation guide |
| SK688R38JP1-OE-2.0 | OEM / 6.75" / 2" | Product installation guide |
| SK688R38JP1-OE-NC | OEM / 6.75" / No Clamp | Product installation guide |
Fitment Table
Vehicle Fitment
Vehicle browsing collections: JK (2DR) 2007-2018; JK (4DR) 2007-2018
Collection year ranges are browsing groups. Use the exact year, engine, axle, body and configuration requirements below.
Application Requirements
Jeep Wrangler JK 3.8L (2007–2011), 2-door or 4-door Designed for rigs with lockers, aftermarket axles, and up to 44" tires
Available Configurations
| Manufacturer Part Number | Configuration | Instructions |
|---|---|---|
| SK688R38JP1-6.75W-1.25 | Aftermarket / 6.75" / 1-1/4" | Product installation guide |
| SK688R38JP1-6.75W-1.375 | Aftermarket / 6.75" / 1-3/8" | Product installation guide |
| SK688R38JP1-6.75W-1.5 | Aftermarket / 6.75" / 1-1/2" | Product installation guide |
| SK688R38JP1-6.75W-1.5OS | Aftermarket / 6.75" / 1-1/2" OS | Product installation guide |
| SK688R38JP1-6.75W-1.625 | Aftermarket / 6.75" / 1-5/8" | Product installation guide |
| SK688R38JP1-6.75W-1.75 | Aftermarket / 6.75" / 1-3/4" | Product installation guide |
| SK688R38JP1-6.75W-2.0 | Aftermarket / 6.75" / 2" | Product installation guide |
| SK688R38JP1-6.75W-NC | Aftermarket / 6.75" / No Clamp | Product installation guide |
| SK688R38JP1-7.5W-1.75 | Aftermarket / 7.5" / 1-3/4" | Product installation guide |
| SK688R38JP1-7.5W-NC | Aftermarket / 7.5" / No Clamp | Product installation guide |
| SK688R38JP1-8.0W-1.25 | Aftermarket / 8" / 1-1/4" | Product installation guide |
| SK688R38JP1-8.0W-1.375 | Aftermarket / 8" / 1-3/8" | Product installation guide |
| SK688R38JP1-8.0W-1.5 | Aftermarket / 8" / 1-1/2" | Product installation guide |
| SK688R38JP1-8.0W-1.5OS | Aftermarket / 8" / 1-1/2" OS | Product installation guide |
| SK688R38JP1-8.0W-1.625 | Aftermarket / 8" / 1-5/8" | Product installation guide |
| SK688R38JP1-8.0W-1.75 | Aftermarket / 8" / 1-3/4" | Product installation guide |
| SK688R38JP1-8.0W-2.0 | Aftermarket / 8" / 2" | Product installation guide |
| SK688R38JP1-8.0W-NC | Aftermarket / 8" / No Clamp | Product installation guide |
| SK688R38JP1-OE-1.25 | OEM / 6.75" / 1-1/4" | Product installation guide |
| SK688R38JP1-OE-1.375 | OEM / 6.75" / 1-3/8" | Product installation guide |
| SK688R38JP1-OE-1.5 | OEM / 6.75" / 1-1/2" | Product installation guide |
| SK688R38JP1-OE-1.625 | OEM / 6.75" / 1-5/8" | Product installation guide |
| SK688R38JP1-OE-1.75 | OEM / 6.75" / 1-3/4" | Product installation guide |
| SK688R38JP1-OE-2.0 | OEM / 6.75" / 2" | Product installation guide |
| SK688R38JP1-OE-NC | OEM / 6.75" / No Clamp | Product installation guide |
Warranty
PSC states that most products carry 12 months of coverage for manufacturing defects for the original purchaser. Eligibility and exclusions depend on the product and use. Racing, competition, off-road-only and non-street-legal products are excluded under PSC’s published terms. Installation-related damage and labour or incidental costs are not covered. Contact Niagara Jeeps & Trucks with proof of purchase before arranging a claim.
Shipping & Returns
Shipping & Refund Policy
Shipping:
We ship across Canada. Orders are processed within 1–2 business days. Delivery within Canada typically takes 3–10 business days depending on location and carrier. Tracking information will be provided once your order ships.
Refunds & Returns:
Returns are accepted within 30 days of delivery. Items must be unused and in original packaging. Please review our full return policy for more details.
Damaged or Incorrect Items:
If you receive a damaged or incorrect item, please contact us within 5 days of delivery. Call or text 416-624-1357 or email sales@Niagarajeeps.ca so we can resolve the issue quickly.