When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Direct Bolt-On Upgrade: Installs easily on original 1955–57 Chevy car spindles with no machining or modifications required, Enhanced Braking Power: 11" vented drilled and slotted rotors help improve heat dissipation and braking performance over stock drum setups, Complete Front Kit: Includes rotors, single-piston GM calipers, semi-metallic brake pads, bearings, seals, hoses, brackets, hardware, and instructions, OEM-Compatible Fitment: Uses GM 5 on 4.75" bolt pattern and 1969–72 GM calipers with 7/16"-20 inlets for easy service and parts availability, Fitment Considerations: Increases front track width by 1-3/4" total and may not clear some 14" wheels; designed for long-term durability 1955-57 Chevy Car Front Disc Brake Kit, Drilled/Slotted Sku # 91031949D Mfr. Part # 91031949D Condition New Brand Speedway Motors Sold Kit Details
Bringing economy to performance, this brake kit offers drilled and slotted rotors for a $25 upgrade over our standard kits. Just what's needed to update your classic Tri-Five Chevy! Eliminate those archaic ball bearings and gain first class stopping power all at once with this front disc brake conversion kit. Rotors and caliper brackets bolt onto your original spindles with no modification or machining required. Calipers mount to the front of the spindle.
This disc brake kit will increase the total front track width by 1-3/4" (7/8” per side).
- Uses 11" rotors and 1969-72 GM calipers (7/16"-20 inlets)
- May not clear some 14" wheels
- Bolts onto stock '55-'57 spindles with no machine work
- Includes rubber brake hoses
Specs Sold in Quantity Kit Notes Includes rotors, bearings and seals, calipers, pads, brake hoses, brake tabs, and caliper brackets. MFG. Part # 91031949D Position Front Wheel Bolt Pattern (in.) 5x4.75 in. Wheel Bolt Pattern (mm) 5x120.65 mm Rotor Diameter 11 Inch Rotor Type Vented Caliper Pistons One Caliper Finish Natural Parking Brake Provision No Minimum Recommended Wheel Diameter 15 Inch Rotor Shape Round Hardware Included Yes Rotor Style Drilled & Slotted Spindle Type No Value Rotor Thickness 1.05" Stud Diameter 0.44" Stud Length 0.8" Thread Pitch 7/16"-20 Front Suspension Type IFS Rotor Material Type Cast Iron Front Rotor Included Yes Front Rotor Diameter 11 Inch Front Caliper Included Yes Rear Caliper Included No Front Spindles Included No Master Cylinder Included No Brake Booster Included No Brake Hoses Included No Ford Bearing End Style Not Applicable Rear Rotor Included No Bolt Pattern 5 on 4.75" Finish Natural Color Natural Track Width Increase 1.75" Front Caliper Finish Natural Front Caliper Piston Quantity Two Reviews If I need to yes it was a perfect match for my 63 corvair Rated by Johnb on May 09, 2026
Summary: It is on my corvair truck and bolted right up but had to put 15" tires and rims that need a little modification to work
Yes, I recommend this product.
I will purchase the kit for the rear soon Rated by Namron on January 02, 2025
Summary: Everything went together real smooth Very satisfied
Yes, I recommend this product.
Great budget upgrade for 55' Rated by Kyle on February 24, 2024
Summary: This fit great on my 55' 210, the cost is affordable, the instructions were easy to read and looks great in comparison to drum brakes. If I had to pick a con if there was one, it would be the part where you need to drill the spindle for the new cotter pin. Not hard but just really nerve racking.
Yes, I recommend this product.
11 inch disc brake complete kit Rated by Forfuxsake on May 16, 2023
Summary: All parts fit together excellent looking forward to stopping
Yes, I recommend this product.
Great service parts fit perfectly all round great experience Rated by glen 56 on August 09, 2022
Summary: Great service parts fit perfectly all round great experience
Yes, I recommend this product.
Related Items / Suggested Parts Speedway Economy Grease Gun Kit with Wheel Bearing Grease Packer Mityvac MV8020 Vacuum Brake Bleeding Kit 1955-57 Chevy Car Disc/Disc Brake Booster Master Cylinder Combo Speedway 1955-57 Chevy Car Front Disc Brake Kit 1955-57 Chevy Front/Rear Disc Brake Kit, D/S Rotors, Chrome Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
