Important Notice: When installing, make sure your chain tension is not tight! Any chain drive that you install should have loose chain tension! Please check the fitment tab for important motor info. The Heavy Hitter Primary Drive Conversion Kit was designed for those wide-open throttle riders who just keep snapping belts. Why the Heavy Hitter kit is the best? Replacing a belt drive with a chain drive will lower the bike's efficiency, which in turn affects power delivery. Chain drives are stronger, just not as efficient. Heavy Hitter's goal with this chain drive is to give you maximum performance by providing the lightest kit on the market! The primary chain drive sprockets are machined from 7075 T6 billet aluminum and have been put through the hardening process with the anodized black finish. This kit comes with a high-quality o-ring chain to offer the longest lifespan. If you want your primary drive to perform even better you can use a standard non-o-ring chain, however, the lifespan of non-o-ring chains will be shorter. The provided o-ring chain is equipped with a master link, facilitating straightforward replacement without necessitating the disassembly of the swing arm.NOTE: This conversion kit maintains your bike's original gear ratio, and OEM motor alignment. Your bike's fitment will be labeled on the motor sprocket and should always face outwards! -Aluminum sprockets always have a shorter lifespan than steel sprockets. The purpose of this kit is to offer maximum performance Features Machined 7075 T6 billet aluminum sprockets Lightweight  for maximum performance (Will have a shorter lifespan than standard heavy steel configurations) Gold 42 link O-ring chain W/Master link included and 42 link nonsealed Japanese chain W/Master link included Best efficiency-rated chain drive on the market Fitment Sur Ron LBX Segway X160 Segway X260 E Ride Pro-S (Does not work with XLB-60 Motor) E Ride Pro-SS (Does not work with XLB-60 Motor) Important Notice: When installing, make sure your chain tension is not tight! Any chain drive that you install should have loose chain tension! This is the known and tested compatibility for this product. Factory variations, dealer options, and aftermarket modifications could affect compatibility in specific case. Please verify compatibility to the best of your ability before purchasing.