Upgrade your Mazda RX-7 FD3S with the cutting-edge OS Giken Super Lock LSD ? a standout 1.5-way mechanical LSD boasting a unique design featuring an impressive 14 plates per side. Unlike conventional LSD centers, this design ensures unparalleled smoothness and total locking under load. Perfect for modified cars used in street, drift, race, or drag applications. Explore superior performance with the option of a 2-way version available by special order. Elevate your driving experience with OS Giken.

Elevate your RB26 with our high-performance RB30 bottom-end kit, designed for power outputs up to 1400hp. Featuring an 86mm stroke, forged chrome-moly crank, H-beam conrods, and aluminum pistons, this upgrade includes unique elements like an 8-bolt flywheel pattern*, 22mm gudgeon pins, and 23mm rod bearing width. Crafted with precision using a new Nissan block and a specially designed spacer and liner kit, it also comes with Nismo black metal crankshaft bearings. The kit is complete with a metal head gasket, specialized head stud bolts, adjustable timing gears, tensioner pulley, and an extended timing belt. Shipping via Sea ensures secure delivery due to its weight. Unleash the full potential of your RB26 with this top-tier bottom-end kit. Upgrade now for an unparalleled driving experience.

Revolutionize your driving performance with OS Giken's close-ratio gear sets, meticulously designed for racing prowess. These sets offer enhanced gear strength and optimal ratios, making them a perfect fit for both racing enthusiasts and street-driven vehicles. Crafted for the Mazda RX-7 FC3S (R15M-D), these gear sets boast strengthened input shafts and accommodate applications up to 600hp. Elevate your vehicle's capabilities with precision-engineered gear ratios: 1st Gear (2.578), 2nd Gear (1.772), 3rd Gear (1.289), 4th Gear (1.000), and 5th Gear (0.821). Unleash the power and experience the performance upgrade with OS Giken's cutting-edge gear sets.