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Whether it has body-on-frame or unibody construction, your vehicle came from the factory with a chassis designed to flex. Engineers made it this way so that it could...
Whether it has body-on-frame or unibody construction, your vehicle came from the factory with a chassis designed to flex. Engineers made it this way so that it could absorb all the bumps of daily driving while keeping the driver and passengers safe and comfortable.
However, when you’re converting a street vehicle into a racing vehicle, that flexibility becomes a liability. The massive torque of drag racing engines can twist the frame so much that one of the front wheels can lift off the ground, causing a dangerous loss of control, and chassis flex also loosens your handling on road courses and autocross tracks.
Chassis...
Whether it has body-on-frame or unibody construction, your vehicle came from the factory with a chassis designed to flex. Engineers made it this way so that it could absorb all the bumps of daily driving while keeping the driver and passengers safe and comfortable.
However, when you’re converting a street vehicle into a racing vehicle, that flexibility becomes a liability. The massive torque of drag racing engines can twist the frame so much that one of the front wheels can lift off the ground, causing a dangerous loss of control, and chassis flex also loosens your handling on road courses and autocross tracks.
Chassis stiffening kits and components reinforce your chassis to make it more rigid. On a unibody vehicle, they usually include connectors to tie the front and rear subframes together. For body-on-frame vehicles, they include braces to tie the sides together, and/or boxing components to close up the channels in the frame rails. Additional components vary by application, manufacturer, and degree of stiffness required.
Summit Racing Equipment has been helping racers and hot rodders meet their performance goals since 1968, so we know all of the ins and outs of a chassis stiffening project. When you’re ready to hit the track, choose parts from brands you can trust, like Hotchkis Sport Suspension, RideTech, Heidts, UMI Performance, BMR Suspension, Stifflers Suspension, and more.
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Frame Brace, Chassis Stiffening, Steel, Natural, 68-72 Chevelle, GM A-body, Buick, Chevy, Oldsmobile, Pontiac, Kit
Part Number: SUM-770800
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
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Frame Brace, Chassis Stiffening, Steel, Natural, 64-67 GM A-Body, Weld In, Kit
Part Number: SUM-770830
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Frame Brace Kits, Frame Position, Steel, Natural, Designed for A 2-door A-body, Buick, Chevrolet, Oldsmobile, Pontiac, Kit
Part Number: SDP-30710
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Frame Brace, Chassis Stiffening, Steel, Natural, Weld In, Tri-Five, Kit
Part Number: SUM-770810
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Frame Brace, Chassis Stiffening Kit, Steel, 63-72 C10, Long Bed, 127 in. Wheelbase, Bolt-In, Chevy, GMC, Kit
Part Number: SUM-770821
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Subframe Braces, Rear IRS, Mustang, S550 Coupe Models, Chromoly, Silver Powdercoat, Chassis Stiffeners, Pair
Part Number: SDA-555-5754
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Front Reinforcement Braces, Front Lower Position, Steel, Black Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Each
Part Number: UPI-3053-B
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Web Braces, Frame Position, Steel, Black Powdercoated, Ford, Set of 4
Part Number: IVP-WEB-M01
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffener, Frame Brace, Steel, Natural, Buick, Chevy, Oldsmobile, Pontiac, 2-Door, A-Body, Kit
Part Number: SDP-30709
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Steering Brace, Front Lower, Steel, Black Powdercoated, Chevy, Pontiac, Each
Part Number: UPI-2030-R
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Front Reinforcement Braces, Front Lower Position, Steel, Red Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Each
Part Number: UPI-3053-R
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Subframe Braces, Rear IRS, Steel, Red Powdercoat, Ford, Kit
Part Number: BMR-CB762R
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Frame Rail to Crossmember Braces, Front, Steel, Black Powdercoated, Chevy, GMC, Pair
Part Number: ART-11369550
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Steering Brace, Front Lower, Steel, Black Powdercoated, Chevy, Pontiac, Each
Part Number: UPI-2030-B
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
FRAME BRACE KIT
Part Number: SDP-60710
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Frame Brace, Mid Frame, Chassis Stiffening, Steel, Natural, 1964-67 GM A-Body, Weld In, Kit
Part Number: SUM-770831
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Cradle Chassis Braces, Rear Cradle Position, Steel, Red Powdercoat, Attaches To Front Section of the Cradle and Frame, Chevy, Pair
Part Number: BMR-CB008R
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Frame Brace, Chassis Stiffening Kit, Steel, 73-87 Chevy/GMC C-Series Truck, Short Bed, Kit
Part Number: SUM-770824
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Cradle Chassis Braces, Rear Cradle Position, Steel, Red Powdercoat, Attaches To Rear Section of the Cradle and Frame, Chevy, Each
Part Number: BMR-CB009R
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
Frame Brace, Mid Frame, Chassis Stiffening, Steel, Natural, 68-72 GM A-body, Buick, Chevy, Oldsmobile, Pontiac, Kit
Part Number: SUM-770801
Not Yet Reviewed
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffener, Frame Brace, Steel, Black Powdercoated, Ford, Mustang, Kit
Part Number: IVP-LCB-M05
Not Yet Reviewed
Estimated Ship Date: Jan 28, 2026 if ordered today
Estimated Ship Date: Jan 28, 2026 if ordered today
Chassis Brace, Rear Sway Bar Supports, Steel, Silver Powdercoated, Ford, Each
Part Number: WHL-KSB729
Not Yet Reviewed
Estimated Ship Date: Jan 28, 2026 if ordered today
Estimated Ship Date: Jan 28, 2026 if ordered today
Chassis Stiffener, Chassis Max X-Brace, Rear, Lower, with Hardware, Steel, Black Powdercoated, For Convertible Camaro/Firebird, Kit
Part Number: HSS-1404
Estimated Ship Date: Monday 1/12/2026
Estimated Ship Date: Monday 1/12/2026
Chassis Stiffeners, Brace, Front K-Member, Buick, Chevy, Olds, Pontiac, Steel, Black Hammertone, Each
Part Number: BMR-CB400H
Not Yet Reviewed
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
Chassis Brace, Rear Sway Bar Supports, Steel, Silver Powdercoated, Subaru, Pair
Part Number: WHL-KBR15
Not Yet Reviewed
Estimated Ship Date: Jan 28, 2026 if ordered today
Estimated Ship Date: Jan 28, 2026 if ordered today
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