520 and 530 chain sizes

Exceptional traction - A combination of our tooth profile coupled with minimized vibration

875" base with 11mm hole

Lever to fold outward to prevent breakage in the event of a crash

Flywheel design and easy-to-grip

NGK - Iridium IX Spark Plug For Polaris, Textron, John-Deere, Mitsubishi & Bentley (BKR5EIX) Option:BKR5EIX 520 and 530 chain sizesIridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0. 6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark