TL;DR
Get business pricing on garage and car supplies
- Business-only prices and quantity discounts
- Tax-exempt purchasing
- Multiple users, one account, clear invoices
Roadster Shop has introduced the RS4 OBS, a complete aftermarket chassis designed for 1988–1998 Chevrolet and GMC pickups. The chassis starts at $45,000 before options; a satin-black powder-coat finish alone adds $5,000, while the reported $60,000 figure depends on configuration. The company lists suspension, drivetrain, brake and engine-mount options, but the source does not specify a final price for a particular build.
Roadster Shop has introduced the RS4 OBS, a complete aftermarket chassis for 1988–1998 Chevrolet and GMC pickups, with a starting price of $45,000. The reported $60,000 figure is not a single stated base price: the final cost depends on selected options, including a $5,000 satin-black powder-coat finish. The platform is aimed at truck owners planning a major restoration or performance build.
The company describes the RS4 OBS as an entirely new, complete chassis intended to give builders a head start rather than require them to upgrade the truck’s original frame piece by piece. According to The Drive’s report, it uses 5-by-2.5-inch frame rails with .188-inch wall thickness. The front and rear differentials are identified as a Currie Dana 44 and Dana 60, respectively, paired with triangulated four-link suspension.
Roadster Shop says the four-link layout is designed to optimize anti-dive, anti-squat and suspension articulation. The chassis includes Fox Racing 2.5 Factory Race Series coilovers, with valving tuned in-house, as well as sealed X-axis flex joints. Roadster Shop says those joints are intended to improve noise, vibration and harshness characteristics and durability compared with spherical or Johnny-style joints. The system also uses front steering geometry optimized with computer-aided design, according to the report.
The RS4 OBS is offered with different engine mounting arrangements, including provisions for the trucks’ original 350 TBI V8 and options for small- or big-block Chevrolet engines and LS- or LT-family engines. An Atlas transfer case can be added for four-wheel-drive builds. Other listed choices include disc-brake packages, stainless-steel brake lines and a Fox ATS steering stabilizer kit. Roadster Shop charges an additional $5,000 for satin-black powder coating; the source does not itemize a specific configuration that totals $60,000.
A High-Cost Shortcut for GMT400 Builds
The price places the chassis in a different category from a routine frame repair or suspension refresh. At a $45,000 starting price, it is a substantial investment before the cost of the truck, engine, transmission, bodywork, labor and other parts. For a builder seeking a heavily modified GMT400, however, a complete engineered platform could consolidate major chassis and suspension work into one purchase.
The package also gives owners a route to combine a familiar older pickup body with modernized suspension components and a broad range of powertrain choices. That may appeal to builders who want a project tailored for road or off-road use, but Roadster Shop’s stated design aims do not establish real-world performance, ride quality or durability outcomes. Those depend on the selected setup and the completed truck.
The $60,000 framing should be treated as a possible configured cost, not the universal price. The published material identifies the $45,000 starting point and some add-ons, but does not provide a full option-by-option build sheet or explain which combination produces a $60,000 total. Buyers will need a quote for their intended configuration.
As an affiliate, we earn on qualifying purchases.
The GMT400 Platform and RS4
GMT400 is the designation commonly used for GM’s 1988–1998 full-size pickup generation, which includes Chevrolet and GMC models. These trucks can serve as restoration, survivor or modified-build projects. The RS4 OBS is intended for that specific generation, rather than being a general-purpose chassis for every classic GM pickup.
Roadster Shop already sells chassis used in high-end restomod projects, The Drive reported, and has developed platforms for other vehicles, including a Chevrolet Squarebody pickup. The RS4 OBS extends that work to GMT400 trucks. Its standard factory mounting locations are described as being for 1988–1998 GM pickups, while optional engine mounts broaden the range of possible builds.
The source compares the chassis’ price with the roughly $15,000 value attached to a GMT400 pickup in the headline. That figure is not presented as a verified market average or a valuation for every truck. Vehicle condition, model, location and specifications can differ, and the source does not provide pricing data to establish a typical purchase price.
““optimize anti-dive, anti-squat, and suspension articulation.””
— Roadster Shop, as quoted on its website in The Drive report
Final Builds and Pricing Remain Open
The source does not disclose a detailed price list showing how a customer’s selected drivetrain, brakes, steering components and other options affect the total. Although the headline refers to a $60,000 chassis, the reported material gives a $45,000 starting price and a separate $5,000 coating option; it does not identify the exact specification or complete cost breakdown behind a $60,000 build.
It is also unclear from the source when deliveries will begin, how long production or shipping may take, and whether installation is available through Roadster Shop or its network. No independent test results or customer-use data are provided to verify the company’s intended handling, comfort or durability benefits. Prospective buyers should confirm compatibility, options, lead time and the full delivered price directly with the company.
Buyers Need a Configuration Quote
The next step for an interested owner is to specify the truck and intended build, then request a quote from Roadster Shop covering the chosen engine mounts, drivetrain, brake package, finish and other options. For four-wheel-drive projects, the buyer would also need to confirm the transfer-case configuration and compatibility with the rest of the build.
Roadster Shop’s published specifications and any forthcoming delivery or installation details will help clarify the cost and practical requirements. Until the company provides a complete itemized example or a buyer shares a confirmed order configuration, the $60,000 figure should remain a reference to a possible optioned build rather than a confirmed standard price.
Key Questions
What is the Roadster Shop RS4 OBS?
It is a complete aftermarket chassis designed for 1988–1998 Chevrolet and GMC pickups, also known as GMT400 trucks.
How much does the RS4 OBS cost?
The reported starting price is $45,000. Options change the final total; satin-black powder coating is listed at an additional $5,000. The source does not provide a complete configuration priced at $60,000.
What engines can be fitted?
The chassis can use the original 350 TBI V8 mounting locations, with optional mounts listed for other small- and big-block Chevrolet engines and LS- and LT-family engines. Buyers should confirm the specific combination with Roadster Shop.
Does the RS4 OBS include four-wheel-drive options?
The report says an Atlas transfer case can be optioned for a four-wheel-drive build. It does not give a full parts list or configuration details for every 4×4 setup.
Is the chassis available now, and how long does delivery take?
The source does not state a delivery schedule, lead time or installation availability. Interested buyers should ask Roadster Shop for current production and shipping information.
Source: rss
Columbus Day / Indigenous Peoples' Day Picks
long weekend sales
As an affiliate, we earn on qualifying purchases.
