Porterfield Brake Shoes for 1969 NISSAN 510 Compound:R-4 Standard Top Mount Spring Rate(Front)

Standard Top Mount Spring Rate(Front) 5 kg/mm (280 lbs/inch) Spring Rate(Rear) 7 kg/mm (392 lbs/inch) Spring Length(Front) 190 mm Spring Length(Rear) 190 mm Spring Inner Diameter(Front) 85 mm (3

Join thousands of discerning F80 M3 and F82/F83 M4 owners who have transformed their vehicles with premium carbon fiber craftsmanship that delivers aggressive styling

Engineered to mount at factory attachment points

5" that follow through with individual pipes until they converge at the Cat-Back system with a 3" Flat-Flange to provide a secure and tight seal every time

Hybrid Racing transmission springs are up to 80% stiffer than the factory Honda pieces

Porterfield Brake Shoes for 1969 NISSAN 510 Compound:R-4 Standard Top Mount Spring Rate(Front)Porterfield Brake Shoes for 1969 NISSAN 510 Porterfield R4 Porterfield R4 Carbon Kevlar based brake pads were fully designed for heavy duty extreme motorsports use. Its one of the the few true motorsports competition pads available on the market today. The carbon based semi metallic R4 brake material allows the brake pad to absorb huge amounts of heat and dissipate it quickly and evenly over time. The Carbon Kevlar material also allows the brake pad