Rough Country 89340S Brake Lines · Front · 4-6 Inch Chevy/GMC C10/K10 Truck & SUV/K5 Blazer (71-78)
Questions about fitment? Live chat or call 866-235-4715
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- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- Recommended for models with 4in - 6in suspension lift kits models with less than 4-inches of lift may have excess slack to keep away from pinch areas
Specifications
| Brand | Rough Country |
|---|---|
| Part number | 89340S |
| UPC / GTIN | 8430301316470 |
| Install time | 2-3 hours |
| Dimensions | 13.0 x 4.25 x 2.5 |
| Weight (lbs) | 2.00lbs |
| Country of Origin | CN |
| Warranty | Manufacturer’s Warranty Statement |
Features
- Dot approved braided stainless steel exterior offers superior protection from off-road debris pressure tested to 4,000psi length: 23in
Fitment
| Years | Vehicle |
|---|---|
| 1971-1974 | Chevrolet Blazer 4WD: Base |
| 1975-1978 | Chevrolet K10 4WD: Cheyenne, Custom Deluxe, Scottsdale, Silverado |
| 1975-1978 | Chevrolet K10 Suburban 4WD: Custom Deluxe, Scottsdale |
| 1975-1977 | Chevrolet K10 Suburban 4WD: Silverado |
| 1975-1978 | Chevrolet K20 4WD: Cheyenne, Custom Deluxe, Scottsdale, Silverado |
| 1975-1978 | Chevrolet K20 Suburban 4WD: Custom Deluxe, Scottsdale |
| 1975-1977 | Chevrolet K20 Suburban 4WD: Silverado |
| 1977-1978 | Chevrolet K30 4WD: Cheyenne, Custom Deluxe, Scottsdale, Silverado |
| 1976 | Chevrolet K5 Blazer 4WD: Base |
| 1975-1978 | Chevrolet K5 Blazer 4WD: Cheyenne, Custom Deluxe |
| 1978 | Chevrolet K5 Blazer 4WD: Silverado |
| 1971-1978 | GMC Jimmy 4WD: Base |
| 1975-1978 | GMC Jimmy 4WD: High Sierra, Sierra Classic, Sierra Grande |
| 1975-1978 | GMC K15 4WD: Base, High Sierra, Sierra Classic, Sierra Grande |
| 1977 | GMC K15 4WD: Indy Hauler |
| 1975-1978 | GMC K15 Suburban 4WD: Base, High Sierra, Sierra Classic, Sierra Grande |
| 1971-1974 | GMC K15/K1500 Pickup 4WD: Base |
| 1971-1974 | GMC K15/K1500 Suburban 4WD: Base |
| 1975-1978 | GMC K25 4WD: Base, High Sierra, Sierra Classic, Sierra Grande |
| 1975-1978 | GMC K25 Suburban 4WD: Base, High Sierra, Sierra Classic, Sierra Grande |
| 1971-1974 | GMC K25/K2500 Pickup 4WD: Base |
| 1971-1974 | GMC K25/K2500 Suburban 4WD: Base |
| 1977-1978 | GMC K35 4WD: Base, High Sierra, Sierra Classic, Sierra Grande |
| 1971-1974 | GMC K35/K3500 Pickup 4WD: Base |
Use the fit check above with your truck selected, or ask a specialist if your trim isn't listed.
Installation
- Estimated install time2-3 hours
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Upgrade your worn out rubber brake lines with Rough Country's Stainless Extended Steel Brake Line Kit. Our DOT approved brake line kits offer the necessary extra length to install your application, perfect for vehicles lifted 2in - 6in and for anyone who wants to swap out poor performing or decaying factory brake lines. Rough Country's Stainless Steel replacements offer superior protection and a seriously long lifespan. A braided stainless steel exterior keeps your lines free from off-road debris, rocks, and mud that can penetrate factory rubber lines. This durable outer layer also prevents expansion of the internal Teflon layer - even under 4,000PSI - keeping fluid moving to the brake line for a noticeably firmer brake pedal feel. High-quality hollow fasteners at both ends of each brake line provide a leak-free flow path.
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
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About Rough Country
Rough Country is a leading manufacturer and distributor of off-road accessories and suspension systems. Built on a foundation of American values and rooted in Tennessee, we use our expertise of trucks, Jeeps, and UTVs to help people drive their passions... Shop all Rough Country