HEL BMW G80/G81 M3 & G82/G83 M4 Series Stainless Steel Front & Rear Braided Brake Lines

Upgrade your braking performance with the HEL Performance stainless steel braided brake line kit, designed specifically for the BMW G80/G81 M3 and G82/G83 M4. This front and rear set eliminates the spongy pedal feel caused by rubber hoses under high pressure, delivering improved pedal response, consistency, and driver confidence—whether on the road or at the track.

Manufactured using a PTFE inner core and a stainless steel (303/304) braided outer layer with a durable PVC coating, these lines offer superior resistance to heat, pressure, and corrosion. Every HEL kit is hand-assembled, pressure-tested, and backed by a lifetime warranty, making it a high-performance and reliable upgrade over OEM lines.

Key Features:

• Fits BMW G80/G81 M3 & G82/G83 M4
• Front & rear complete brake line kit
• Eliminates brake fade and improves pedal feel
• Stainless steel braided construction with PTFE core
• High-grade 303/304 stainless steel fittings
• Enhanced durability and heat resistance
• HEL Lifetime Warranty

Technical Specifications:

• Line inner material: PTFE
• Line outer material: Stainless steel (303/304) with PVC cover
• Fittings material: Stainless steel (303/304)
• Temperature range: -70°C to 260°C (-94°F to 500°F)
• Inside diameter: 3.5mm (0.138")
• Outside diameter: 7.5mm (0.295")
• Maximum working pressure: 290 Bar (4206 PSI)
• Burst pressure: 870 Bar (12618 PSI)
• Minimum bend radius: 38mm (1.496")

What’s in the Box?

• Stainless steel braided brake lines (front & rear)
• Stainless steel banjo bolts (if required)
• Copper crush washers (if required)
• Lifetime warranty keyring fob
• Installation leaflet

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.