Description
Drive Sprocket Chain Combo for Honda CRF70 XR70R Front 15 Rear 36 Tooth 420HZ St. Chain Model: 420HZ. Fits 2004-2012 Honda CRF70, 2000-2003 Honda XR70R. Compatible with the following models:CRF70, XR70R. Sprockets are rotating parts with teeth that are used in conjunction with a chain to transmit power. Compatible with Front Sprocket OEM Parts Honda 23800-GCF-A20 Compatible with Rear Sprocket OEM Parts Honda 41201-GCF-670 Fits 2004-2012 Honda CRF70, 2000-2003 Honda XR70R Compatible with Drive Chain OEM Parts Honda 40530-GCF-672, 40530-GCF-J11, 40530-KYK-911, 405W3-GB2-505 Sprocket Material consists of SAE 1023 structural carbon steel; Oil - LT-001A High Temperature Chain Oil Product description MK1003860 About NICHE NICHE specializes in the highest quality Powersports replacement parts. Our parts meet or exceed the quality of the original parts that come with your machine. Some of the NICHE product categories include cylinders, brake pads, axles, off-road mirrors, and drive chains. Let NICHE components fix your machine today! NICHE Drive Sprocket and Chain Set MK1003860 Standard Drive Chain Includes: NICHE Front and Rear Sprocket Set with Drive Chain Kit Compatible with the following brands: Honda Compatible with the following models: CRF70, XR70R Replaces for the following OEM MPN's: 23800-GCF-A20,41201-GCF-670,40530-GCF-672,40530-GCF-J11,40530-KYK-911,405W3-GB2-505 Front Sprocket Teeth: 15 Rear Sprocket Teeth: 36 Chain Model: 420HZ Chain Links: 86 Chain Pitch: 428 (12.7mm) NICHE DRIVE SPROCKET What is a Drive Sprocket? Sprockets are rotating parts with teeth that are used in conjunction with a chain to transmit power In order for sprockets and chain to be compatible with each other they must both have the same thickness and pitch. In order for the sprockets and chain to work effectively, all of the sprockets should be on parallel shafts with their corresponding teeth on the same plane. Parts of a Sprocket Number of Teeth - The total number of teeth (projections) around the whole circumference of a sprocket Pitch Diameter (PD) - An imaginary circle which is traced by the center of the chain pins when the sprocket rotates while meshed with a chain Pitch - The amount of pitch diameter in inches per tooth. Gears with a larger pitch will have bigger teeth When to Replace? Check how well the chain meshes with the sprocket teeth. In a healthy chain and sprocket combo, the individual chain rollers align perfectly with the spaces between the sprocket teeth and fit down into those U-shaped grooves evenly Look closely at the sprocket teeth to see if they have become sharp at the tips and/or slightly curled. The teeth on a new sprocket are straight and have a flat or domed shape at the tip, If the teeth are sharp, the sprocket is worn Drive Chain Types Pros: Lightweight Best for racing No loss of power Little to no friction Cons: Wears quickly Stretches faster No internal lubrication Pros: Longer Life Great sealant Internal lubrication Cons: Heavy Most friction Less horsepower Pros: Low friction Longest lifespan Internal lubrication Increased efficiency over O-Ring Cons: Heavy Expensive Always ensure that your sprockets are in good condition, properly aligned and lubricant specifically designed for your chain. Don't let chain maintenance slip past you, a broken chain will ruin anyone's riding day. Stay on top of your lubrication and cleaning practices Replaces chain immediately if it comes in contact with the battery acid. Clean your chain if it comes in contact with salt water or rock salt and lubricate it after cleaning. Do not use harsh solvents or chemicals such as Benzene to clean your chain. We recommend lubricating your chain at every 300-350 miles with a lubricant specifically designed for your chain. Product Disclaimer: Always refer to and verify recommended manufacturer specifications including required tensile strength for your application prior to installing this product. Drive chain should only be installed by a certified professional. If unsure, please contact the vehicle manufacture or a local dealer.