Speed Pro | HellFire Ring Set for Blower, Turbo & Nitrous Applications Engineered to thrive in extreme racing conditions. Manufactured from a specially hardened and tempered ductile iron material, they retain tension under the most brutal operating conditions including engines relying on mega doses of nitrous oxide, high boost turbos and superchargers. Tested and proven in Pro Street, IHRA Pro-Mod and NHRA Top Fuel & Funny Car. More Power. Higher Vacuum! Retains Tension! Greater Durability! Easier on Cylinder! Better Oil Control! Speed-Pro HellFire rings survive when the heat is on. Tested and proven in Pro Street, Pro-Mod and Top Fuel.
Part Type: Piston Ring Set Bore Size (in): 4.000" + .005 Bore (4.005”) Bore Size (mm): 101.600mm Piston and Ring Oversize (in): .005" Piston and Ring Oversize (mm): .127mm File Fit: Yes Gapless: No Top Ring Thickness: 1/16" Top Ring Material: Iron Top Ring Facing Material: Ductile Iron Second Ring Thickness: 1/16" Second Ring Material: Iron Second Ring Facing Material: Cast Iron Oil Ring Thickness: 3/16” Oil Ring Tension: Standard Oil Ring Material: Stainless Steel Manufacturer: Federal Mogul Manufacturer's Part Number: R19100-5 Brand: Speed Pro Weight: 2 lbs Warranty: Race Application, No warranty expressed or implied Quantity: Sold as Set |