H&R Racing HR1302 – 27 x 12mm Silicone Rear Tires on Aluminum Wheels (1/8" Axle, Set Screw Type) Precision-Machined Wheels with Durable Silicone Grip Product Overview These 27 x 12mm Silicone Rear Tires come factory-mounted on lightweight aluminum set screw wheels designed for 1/8" axles. The setscrew design offers a secure, slip-free connection to your axle—critical for high-torque applications and smooth power delivery. These are the official rear wheels for the CARS H&R Series. The lightweight aluminum hubs reduce rotational mass, improving acceleration and braking. Combined with the long-lasting silicone tires, they offer excellent grip on both plastic and wood tracks and require no break-in. Key Features Tire Diameter: 27mm Tire Width: 12mm Material: High-grip Silicone Hub Material: Lightweight Aluminum Axle Size: 1/8" Attachment: Set screw (hex key required) Application: Rear axle Race-Approved: Legal for CARS H&R Series competition