Our Heavy-Duty Yamaha Supercharger Shaft & Bearing Kit features all new one-piece design for maximum durability in performance applications. Shaft is precision machined from a single piece of high-strength billet steel producing shaft, collar & gear as one piece. This eliminates the common failure point on stock shaft where OEM gear is pressed onto shaft. Shaft also features larger diameter threads & nut for added strength. Kit includes new one-piece bearing with increased surface area providing improved torsional stability of shaft. Bearing features superior materials & finish treatment for reduced friction & abrasion resistance. This Shaft & Bearing Kit is a direct replacement for OEM parts and requires no additional modifications for use. Key benefits include: One piece shaft/collar/gear construction, stronger billet material & superior surface finish, larger diameter threads & nut, one-piece bearing improves shaft stability, manufactured exclusively for RIVA by HKS. The kit includes supercharger shaft, bearing, shaft nut and complete installation instructions. Its part number is RY17040-UK-6S5-2 and costs $399.95
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>Riva FX/SHO/FZR SC shaft kit
















