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Enhance the performance of your Nissan RB engine with the Billet Underdrive Pulley Set, manufactured by RE-WIRES NZ. Machined from top-quality 6061-T6 aluminum, our pulley set not only adds a modern edge to your engine bay but also contributes to the efficiency of your vehicle. The large-diameter pulleys are engineered to reduce the speed of your water pump and alternator, extending their longevity. Choose between 140mm or 126mm for the water pump pulley to best suit your setup, while the alternator pulley is precisely sized at 87mm diameter. Important note: the 140mm water pump pulley may conflict with ATI Harmonic Balancers, and in such cases, the 126mm version is recommended. Our products, available for all RB20, RB25, RB26, and RB30 engines, come anodized for both aesthetics and wear resistance. For individual purchases, explore our diverse listings. Each component is CNC crafted with expertise in Napier, New Zealand—where quality meets innovation.
