This center cap only fits: JR1 and JR2

To complite your suspension upgrade be sure to check out the Lock kit for Mazda RX8

the GenV range has more features

These kits offer a significant increase in clamping force (30-60% above the factory clutch) over the Heavy Duty equivalents and are designed specifically for vehicles that have had significant aftermarketing tuning and performance upgrades

The TS-2 Turbocharger Series takes a comprehensive end-to-end approach to engine performance

Clutch Kit - Xtreme Performance Heavy Duty Organic 290Nm 700kg (30% inc.) KMI23005-1A JR44 This center cap only fits:Xtreme Performance sprung organic kit 1A Recommended for: Street use in vehicles with minor engine modifications. Sprung organic clutch kits offer exceptional driveability for vehicles used daily but also have performance modifications. The sprung organic disc offers improved dampening which reduces the shock loading on the transmission. Specifications: Torque capacity 290Nm Clamp load 700kg 30% Increased over standard Organic Friction Discs Heavy