FSC variable speed bicycle chain.8 speed, 9 speed general purpose,

• Double X bridge type design: A wonderful bridge type (shift angle) designed by professional computer software and actual measurements by athletes, which reduces the interference between the tip of the chain dish gear and the chain as much as possible when shifting, greatly reduces noise and friction, and provides a unique shifting experience. • Compatible lead angle design: A symmetrical lead angle is designed on the chain outer plate, which allows the chain and gear dish & flywheel to move vertically more smoothly, resulting in faster shifting response.The joints are firmly connected using a parallel caulking process, which is said to be the strongest and most durable connection method available today.This allows the chain to withstand the destructive force of mechanical trampling even when chaining at high speeds and rapid ranges. • Ultra-high steel properties, ultra-high wear resistance: Provides efficient trampling force transmission and stable kinetic energy transmission, giving users an advantage at the starting point, maintaining a relatively high transmission rate, equipped with actual measurements by professional athletes, and extending the service life by 1.5 times that of ordinary chains. • Ultra-light weight, dirt drainage hole design: The inner and outer chain plates are precisely designed with an openwork structure, reducing weight while maintaining strength.The best choice for the ultimate lightweight combination or long distance driving. • Wide system compatibility: Compatible with Campagnolo, Shimano, Sram and numerous passenger car and Jeep transmission systems on the market.

Product specifications: ☛ Model number: F90-LK ☛ Size: 1/2"x11/128" thin ☛ Pin length: 6.4mm ☛ Pin length connection point strength: 180kg (minimum standard) ☛ Tensile strength: 920kg (minimum standard) ☛ Color (outside/inside): Silver, Golden, Brown ☛ Applicable transmission gears: 9-speed, 8-speed, ☛ Weight: 0.29kg ☛ Number of links: 116 ☛ Packaging: Blister pack. technical support ☛Q: How long will it take to replace worn chains? ☛ A: Normally, if the elongation rate exceeds 1%, we will replace it." ☛ "Q: Under what circumstances will wear and tear on the chain increase? ☛ A: When I stepped on my bicycle, I put too much force on it, so the chain became slanted.If too much oil and mud gets on the chain, it will increase wear on the missing link, enlarge the hole in the missing link, increase the elongation rate, and reduce the life of the chain." ☛ "Q: What should I pay attention to when installing the chain? ☛ A: The current new generation chain is connected with rivets, and both sides of the missing link are enlarged to increase the rotational force when the chain is diagonal.These types of chains cannot be assembled directly, and when installed, special connecting pins or missing links are used.The old chain has flat sides on both sides, so when installing it using a specialized chain cutter, you can aim it at the hole and drive it in smoothly.Then, apply some diagonal force to check whether the chain is rotating smoothly." ☛ "Q: Can chains with different speeds be used? ☛ A: Theoretically, the chain can be used for lower gears, but the widths of the 8, 9, and 10 speed chains are different, and the gaps between the gears are different, so a 9-speed chain can be used with the 8-speed gear, but due to meshing, a gap may appear, making it impossible to shift smoothly or making noise.Therefore, it is recommended not to use it (with current technology, 6th, 7th, and 8th speeds are designed with the same speed level, and the same size chain can be used for these 3 speeds.) ☛ "Q: When will you check the chain? ☛ A: When the chain cannot rotate smoothly and the speed of shifting decreases, please check the chain." ☛"Q: How do you inspect the chain? ☛ A:1, chain gauge ☛ 　 2. Adjust the chain to the outer ring of the front ring and pull the chain.If the pulled chain is loose or the front ring is worn, the chain or front ring must be replaced." ☛ "Q: How often do you check the chain? ☛ A: 1. I drove 500km on a flat road. ☛ 　 2. I drove 150 km on a bumpy road." ☛ Note: The service life of the chain depends on the driving intensity and maintenance method, so please avoid extreme gear changes while driving.