Go Faster? Add Lightness, GFB's Lightweight Pulley Kits offer sharper throttle response and faster acceleration by significantly reducing the rotating mass at the engine. Made from a single billet of 6061-T6 aluminium, then precision CNC machined to exacting tolerances, our pulley kits offer an exceptional bolt-on performance advantage without the need for supporting mods or tuning

• Sharper Throttle Response and “urge”, engine feels more lively and willing to rev, up to 85% rotating inertia reduction, will not cause engine damage, no negative effects on driven accessory performance

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