9-speed starter motor. Compatible with Yamaha YZF-R1 (2009–2014). Year/Model/Motorcycle Starter--BIEMMEDUE

This 9-tooth (9T) starter pinion gear is specifically designed for Yamaha YZF-R1 motorcycles and is supplied directly by the manufacturer. It is fully compatible with YZF-R1 models from 2009 to 2014 and exactly matches the original specifications. It replaces worn, slipped, or damaged original starter pinions, providing a powerful and cost-effective replacement for reliable starting. [Fully Compatible Models] Compatible Models: Yamaha YZF-R1 Compatible Model Years: 2009, 2010, 2011, 2012, 2013, 2014. Precision Manufacturing: Made from high-strength alloy steel, precision CNC machined and heat-treated for exact tooth shape, high surface hardness, and excellent wear and impact resistance. Original factory specifications: Manufactured according to the original 9-tooth design specifications, module, pressure angle and internal toothing of the gear, with precise dimensional tolerances to ensure perfect engagement with the starter armature shaft and flywheel ring gear.