Speed Pro Piston Rings - 4.145 in Bore - File Fit - 1/16 x 1/16 x 3/16 in Thick - Standard Tension 016440NRRS Spiro-Pro's two-layer 100% silicone inner

Spiro-Pro's two-layer 100% silicone inner core & outer jacket keeps the wires flexible for the life of your vehicle maintaining its vibrant color with heat protection to 600

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XL Antennas for 30% more range

2001 - 2006 BMW M3Vehicle Applications: 1999 - 1999 BMW 328is

Chevy X-Body 1968-74

Speed Pro Piston Rings - 4.145 in Bore - File Fit - 1/16 x 1/16 x 3/16 in Thick - Standard Tension 016440NRRS Spiro-Pro's two-layer 100% silicone innerSpeed Pro designs and engineers pistons to meet the most demanding street performance and racing conditions. In combination, we draw upon more than 100 years of Speed Pro engine mastery to enhance the piston ring and its seal. Our Speed Pro brand is recognized for being a winner in every form of racing, and is the proven horsepower leader in oval track and drag racing. Hell Fire Rings: Speed Pro Hell Fire rings, manufactured from a specially hardened