Force 1 / F1ZR Ratio Gear (4 Speed)

Four Speeds. Two Setups. Pick Your Ratio.

Engineered for the Yamaha Force 1 / F1ZR gearbox, this 4-speed Ratio Gear set is precision-machined for consistent tooth engagement across all four gear positions. Available in two configurations — STD for standard street use and Tune Up for modified setups — each offering a different gear spread to suit varying riding requirements. Each set includes both the main shaft and counter shaft for a complete, ready-to-fit gearbox replacement. Select the configuration that matches your setup before ordering.

Ratio Specifications:

• STD — 14×36T / 17×28T / 20×25T / 22×23T
• Tune Up — 14×31T / 18×27T / 20×24T / 22×23T

🔹 Highlights

• Precision-Machined Gear Teeth — consistent tooth profile geometry for stable engagement across all four gear positions
• STD and Tune Up Configurations — STD for standard street use; Tune Up for modified gearbox setups
• Main Shaft and Counter Shaft Included — complete shaft set for full gearbox replacement
• Force 1 / F1ZR Gearbox Fitment — dimensioned to match Yamaha Force 1 / F1ZR gearbox specifications
• Complete Shaft Set — main shaft × 1 and counter shaft × 1 supplied as a matched pair

✔ Product Specifications

• Type: Ratio Gear (4 Speed)
• Ratio Options: STD / Tune Up
• Fitment: Yamaha Force 1 / F1ZR
• Focus: Gearbox rebuild / ratio change
• Package Includes: Main Shaft × 1, Counter Shaft × 1

🔧 Installation Notes

• Confirm ratio configuration matches your gearbox tuning requirement before ordering
• Inspect gearbox casing and bearings for wear before installation; replace if necessary
• Ensure correct gear engagement across all four positions before closing gearbox casing
• Gearbox disassembly and reassembly is recommended to be carried out by a technician with relevant experience

Power You Can Trust.