DSE Rear Speed Kit 2 (041649DS) - 1973-1987 Chevrolet C10 / GMC C15
Drop your Square Body into a much more aggressive stance with the Detroit Speed Rear Speed Kit 2. Designed for 1973-1987 Chevrolet C10 and GMC C15 applications, 041649DS provides a complete rear lowering solution built around a leaf spring flip kit, frame C-notch, and non-adjustable drop shocks. The system lowers rear ride height approximately 5 to 6 inches while providing the axle-to-frame clearance required for a properly executed axle flip.
Detroit Speed builds the flip kit axle pads and plates from high-strength 1/4-inch-thick steel, while the C-notch is constructed from 3/16-inch-thick steel. Components are powdercoated black for durability, and electroplated U-bolts and hardware provide additional corrosion resistance. Two leaf spring pinhole locations in the axle pads provide adjustment for centering the rear axle, while the included C-notch, bump stops, drop shocks, and mounting hardware bring the major components together in one bolt-on lowering package.
Specifications
- Manufacturer: Detroit Speed
- Part Number: 041649DS
- Product Type: Rear Speed Kit
- Speed Kit: Rear Speed Kit 2
- Position: Rear
- Axle Application: Stock
- Rear Lowering: Approximately 5 to 6 inches
- Shock Type: Non-Adjustable Drop Shocks
- Flip Kit Axle Pad and Plate Material: Steel
- Flip Kit Material Thickness: 1/4 inch
- C-Notch Material: Steel
- C-Notch Material Thickness: 3/16 inch
- Finish: Black Powdercoat
- Axle Pad Leaf Spring Pinhole Locations: Two
- Hardware: Electroplated
- Installation Type: Bolt-On
- Leaf Spring Requirement: 3/1 Leaf Springs
- Includes: Leaf Spring Flip Kit, C-Notch, Non-Adjustable Drop Shocks, U-Bolts, Bump Stops, and Mounting Hardware
Features
- Lowers rear ride height approximately 5 to 6 inches for an aggressive Square Body stance
- Leaf spring flip kit moves the axle into the lowered configuration
- C-notch provides the necessary rear axle-to-frame clearance for the axle flip
- Flip kit axle pads and plates are manufactured from high-strength 1/4-inch-thick steel
- C-notch is manufactured from high-strength 3/16-inch-thick steel
- Black powdercoated components provide strength and long-term durability
- Two leaf spring pinhole locations in the axle pads provide adjustment when centering the rear axle
- Electroplated U-bolts and hardware provide corrosion resistance
- Includes new non-adjustable drop shocks designed to work with the lowered rear suspension
- Includes mounting hardware and bump stops
- 100 percent bolt-on design simplifies installation
Fitment Notes
This kit is designed for 3/1 leaf springs only. The included C-notch is designed specifically for use with Detroit Speed Speed Kits and will not fit the Detroit Speed QUADRALink rear suspension system.
Fitment
- 1973 Chevrolet C10 Pickup
- 1974 Chevrolet C10 Pickup
- 1975 Chevrolet C10 Pickup
- 1976 Chevrolet C10 Pickup
- 1977 Chevrolet C10 Pickup
- 1978 Chevrolet C10 Pickup
- 1979 Chevrolet C10 Pickup
- 1980 Chevrolet C10 Pickup
- 1981 Chevrolet C10 Pickup
- 1982 Chevrolet C10 Pickup
- 1983 Chevrolet C10 Pickup
- 1984 Chevrolet C10 Pickup
- 1985 Chevrolet C10 Pickup
- 1986 Chevrolet C10 Pickup
- 1987 Chevrolet R10
- 1975 GMC C15
- 1976 GMC C15
- 1977 GMC C15
- 1978 GMC C15
- 1973 GMC C15/C1500 Pickup
- 1974 GMC C15/C1500 Pickup
- 1975 GMC C15/C1500 Pickup
- 1976 GMC C15/C1500 Pickup
- 1977 GMC C15/C1500 Pickup
- 1978 GMC C15/C1500 Pickup
- 1979 GMC C15/C1500 Pickup
- 1980 GMC C15/C1500 Pickup
- 1981 GMC C15/C1500 Pickup
- 1982 GMC C15/C1500 Pickup
- 1983 GMC C15/C1500 Pickup
- 1984 GMC C15/C1500 Pickup
- 1985 GMC C15/C1500 Pickup
- 1986 GMC C15/C1500 Pickup
- 1979 GMC C1500
- 1980 GMC C1500
- 1981 GMC C1500
- 1982 GMC C1500
- 1983 GMC C1500
- 1984 GMC C1500
- 1985 GMC C1500
- 1986 GMC C1500
- 1987 GMC R1500
FAQs
How much does DSE Rear Speed Kit 2 041649DS lower the rear of a Square Body?
Detroit Speed designed the kit to lower rear ride height approximately 5 to 6 inches using a leaf spring flip kit, C-notch, and matching drop shocks.
Why does DSE 041649DS include a C-notch?
The C-notch provides the additional axle-to-frame clearance required when lowering the truck with the included axle flip system.
Will DSE 041649DS work with a QUADRALink suspension?
No. Detroit Speed specifies that this C-notch is designed for its Speed Kits only and will not fit the QUADRALink system. The kit is also designed specifically for 3/1 leaf springs.
Why Buy from Beefcake Racing?
Beefcake Racing is your source for Detroit Speed suspension and chassis components for classic GM truck builds. Whether you are lowering a street-driven Square Body or building a complete performance suspension package, our team can help you choose the right components for your combination. Questions about DSE 041649DS or related suspension parts? Call 1-855-827-7223 or email sales@beefcakeracing.com.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

