SHIMANO's SL - M315 RAPIDFIRE shift lever is a top - choice for mountain bike enthusiasts. It offers reliable and quick shifting, allowing riders to downshift three gears in a single stroke. Here are the key specifications: MODEL NO: SL - M315 - 8R; SERIES: SHIMANO; Color: Series color; Mount type - Clamp band: ✔; Shift lever cable - Inner cable - Stainless: ✔; Compatible rear derailleur type: MTB 8 - speed; Max. multiple shifts (Main lever/rear): 3; OPTICAL GEAR DISPLAY - with: ✔; Rear speeds: 8; Recommended shifting lever outer casing: OT - SP41; Shift lever cable adjust: ✔; Shifter type: RAPIDFIRE PLUS; Compatible with I - SPEC EV Brake Lever: ✔.

Using this Shimano shift lever is quite simple. Just hold the lever and operate it to shift gears. You can downshift three gears at once, which is super handy when you need to quickly adjust your speed on the mountain. When using, make sure the lever is properly installed and clamped. Check the cable regularly to ensure it's in good condition. If you notice any abnormal shifting, adjust the shift lever cable as needed. For maintenance, keep the lever clean by wiping it with a dry cloth after riding in muddy or wet conditions. Also, lubricate the moving parts occasionally to keep the shifting smooth.