89370 Front Brake Lines Stainless Steel Kit - Lifted Truck Fitment

In this review the 89370 Front Brake Lines kit is evaluated for owners of lifted Chevy and GMC trucks who need longer, stronger brake lines. The bottom line: this is a practical, heavy-duty replacement for trucks with 5-7.5' of lift that improves brake feel and resists off-road damage. It will appeal to owners who prioritize durability and firmer braking response, though a modest level of mechanical skill may be required to modify the line end for some caliper types.

Key Features

• Direct replacement: Designed to replace part number 89370 and fit a narrow range of Chevy and GMC models with lift, simplifying installation when compatible.
• Lift-specific fit: Engineered only for trucks with 5-7.5' of suspension lift, so the line length and routing suit lifted front suspensions.
• Stainless steel construction: The braided stainless steel exterior resists wear and corrosion, helping lines survive rocks, mud, and off-road debris.
• Improved braking feel: The inner extended line reduces expansion under pressure for firmer, more responsive braking during heavy use.
• Modifiable end fitting: If a vehicle has a different caliper, the end of the brake line can be modified to achieve a proper seal and fit.

Who It's For

The kit is best for owners of 2007-2019 Chevy Silverado 1500 and 2007-2019 GMC Sierra 1500, and 2011-2019 Chevy Silverado and GMC Sierra 2500/3500HD who run 5-7.5' of front suspension lift and need longer, more durable lines. It suits off-road drivers and truck modifiers who want a more responsive brake pedal and protection against trail hazards.

It is not for stock-height trucks, those with a lift outside the 5-7.5' range, or owners of the 2007 Silverado/Sierra 1500 new body style, which is explicitly not compatible. Vehicles with unusual calipers may require an end fitting change or a professional installer.

Pros & Cons

Pros

• High-quality braided stainless steel resists corrosion and external damage for long service life.
• Extended inner line reduces expansion for firmer braking response under pressure.
• Targeted fit for lifted Silverado and Sierra models simplifies replacement when matched to vehicle specs.
• Replaceable part number and clear fitment notes make ordering straightforward.

Cons

• Fit has mixed reports; some owners may need to modify the line end due to caliper differences.
• Only fits trucks with 5-7.5' lift and excludes the 2007 new body style, limiting applicability.

Specifications

Our Verdict

The 89370 Front Brake Lines kit is a solid choice for lifted Silverado and Sierra owners who need durable, longer front brake lines that improve pedal feel and survive off-road conditions. It represents good value when matched to the specified vehicles and lift range, but buyers should verify caliper compatibility and be prepared to modify the end fitting or use a professional installer if necessary.

Frequently Asked Questions

Will these lines fit a stock-height Silverado?
No. These lines are made only for trucks with 5-7.5 in of suspension lift and are not intended for stock-height vehicles.

Are these lines corrosion resistant?
Yes. The braided stainless steel exterior provides wear and corrosion resistance for off-road use.

What if my calipers differ?
Due to different caliper designs, the end of the brake line can be modified to achieve proper fit and sealing when necessary.