RC Maker has officially unveiled the SP2 competition touring car, the successor to its well-regarded SP1 platform. According to the company, the new machine is the product of a three-year development program that leaned heavily on iterative, back-to-back testing against the previous model.
Learning from the SP1
The SP1 launched about two years ago and quickly racked up wins on tracks around the world. Rather than resting on that success, RC Maker went back to the drawing board. The company identified several areas for improvement while also zeroing in on what made the SP1 great. The result is a car that keeps its predecessor’s DNA but has been re-engineered from the ground up.
Primary sources report that the bulk of the development work focused on refining flex characteristics, torsional stiffness, and suspension geometry. The stated goal was to improve overall quality and performance, leaving “absolutely no stone unturned in delivering a machine that was capable of winning at the highest level, and standing the test of time in average racers’ hands.”
Three Chassis Options and Suspension Overhaul
RC Maker is offering the SP2 in three distinct chassis material options: 2.2mm carbon fiber, 1.5mm aluminum, and 1.2mm spring steel. All three variants use the same 110° steel screws, making swaps between them straightforward and reducing the need for separate spare parts.
The suspension system has been thoroughly reworked. New XS shocks and springs reduce unsprung weight, while a coaxial shock and pushrod geometry aim to deliver smoother action and a lower moment of inertia. The suspension arms are 3mm longer and mounted 6mm closer to improve corner speed. Steel pushrod components replace ball cups to cut down on wear, weight, and friction, and the rocker height is adjustable via a slider for quick fine-tuning.
Steering, Drivetrain, and Chassis Refinements
The steering rack has been lengthened to 8.0mm and includes optional steering lock stoppers. A low-CG one-piece servo mount uses enlarged locating pins for precise alignment. The bulkheads have been raised, with a 4mm raised top deck mounting that provides more rigid and progressive chassis flex. The diff and spool positions are also raised to improve corner speed and driveability.
On the drivetrain side, threaded aluminum diff halves free up clearance for the longer suspension arms. Larger bearings on the driveshafts eliminate couplers, reducing friction and wear. The center pulley bearings are bigger for better rigidity under high loads.
The chassis itself has a minimized footprint to reduce scrubbing during cornering, acceleration, and braking. A low-CG front bumper assembly is integrated into the front bulkhead, allowing easy removal without interrupting chassis flex. Split-style rear body mounts minimize the moment of inertia.
What RC Maker Says
In its announcement, RC Maker described the SP2 as “built on a relentless pursuit of designing a unique, innovative and highly competitive touring car platform for professional to novice racers, and everyone in between!”
Availability
The SP2 is now officially announced. For full specifications, chassis options, and ordering details, enthusiasts can visit the RC Maker website at rcmaker.com.au.









