The "Factory Image Racing" offers titanium grade 5 bolts, which are considered the best grade for motorcycle applications. These bolts are specifically designed for rear wheels of Kawasaki and Suzuki bikes. Here are the details: Bolt Disc Set of 6: Rear Kawasaki & Suzuki Step Bolt Info: Material: Grade 5 (6Al/4V) Titanium Pitch T1: M8x1.25mm Length T2: 10.80mm OD step S1: 9.90mm H step S2: 3.30mm L Head H: 3.30mm Head OD: 14.80mm Head Allen: #6 Pack Quantity: 6 OEM Reference: SUZ 09139-08022 Cross Reference Numbers: 09139-08022 SUZUKI (REAR) 2007-16 RMZ250 2010-16 RMX450 2007-17 RMZ450 Assemblies where 09139-08022 is used: Cross Reference Numbers ONLY: MX-05914, SCREW (8X15) 09139-08022 This bolt set provides durability and reliability, ensuring a secure attachment for rear wheels on compatible Kawasaki and Suzuki models. Majority of our listings are for a direct replacement for your original part. Our parts are made of quality and are designed to meet or exceed the original OEM Standards. Our products are often a cost effective alternative to genuine OEM Parts. Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.