Jupiter-Z1 Ratio Gear (4 Speed)

Ratio Specifications:

  • 1st — 13×33T
  • 2nd — 16×29T
  • 3rd — 19×27T
  • 4th — 20×24T

Four Speeds. One Precision Set.

Engineered for the Yamaha Jupiter-Z1 gearbox, this 4-speed Ratio Gear set is precision-machined for consistent tooth engagement across all four gear positions. Each set includes both the main shaft and counter shaft for a complete, ready-to-fit gearbox replacement. Confirm compatibility with your Jupiter-Z1 gearbox configuration before ordering.

Ratio Specifications:

  • 1st — 13×33T
  • 2nd — 16×29T
  • 3rd — 19×27T
  • 4th — 20×24T

🔹 Highlights

  • Precision-Machined Gear Teeth — consistent tooth profile geometry for stable engagement across all four gear positions
  • Full 4-Speed Ratio Coverage — complete gear set covering all four positions for full gearbox replacement
  • Main Shaft and Counter Shaft Included — complete shaft set for full gearbox replacement
  • Jupiter-Z1 Gearbox Fitment — dimensioned to match Yamaha Jupiter-Z1 gearbox specifications
  • Complete Shaft Set — main shaft × 1 and counter shaft × 1 supplied as a matched pair

✔ Product Specifications

  • Type: Ratio Gear (4 Speed)
  • Fitment: Yamaha Jupiter-Z1
  • Focus: Gearbox rebuild / ratio change
  • Package Includes: Main Shaft × 1, Counter Shaft × 1

🔧 Installation Notes

  • 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.