JOG 90 Cylinder Set 12pin 54mm
JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm
JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm JOG 90 Cylinder Set 12pin 54mm

JOG 90 Cylinder Set 12pin 54mm

Durable iron bore. Stable compression. Ready-to-ride rebuild.

This Cylinder Kit for Yamaha JOG 90 uses a cast-iron cylinder sized at Ø54 mm to support reliable ring seal and steady heat management in daily use. The matched piston/ring set and OEM-fit interfaces make assembly straightforward for routine top-end service or refresh builds.

Highlights

  • Cast-Iron Durability — Robust wear resistance and stable thermal behavior for commuting and hill rides.

  • Honed Ø54 mm Bore — Supports quick ring seating and consistent compression after break-in.

  • Matched Piston & Rings — Controlled geometry helps the engine run smooth with clean sealing.

  • OEM-Fit Deck & Studs — Cylinder interfaces align with stock cases and hardware for easy install.

  • Complete Top-End Package — Includes the cylinder gasket for a clean, leak-free assembly.

Product Specifications
✔ Bore Size: Ø54 mm
✔ Cylinder Material: Cast iron
✔ Fitment: Yamaha JOG 90 (confirm year/engine variant)
✔ Type: Top-end rebuild kit
✔ Package Includes: Cylinder Body ×1, Piston ×1, Piston Rings ×1 set, Piston Pin ×1, Circlips ×2, Cylinder Gasket ×1

Installation Notes

  • Pre-lube and trial-fit; confirm piston-to-wall clearance and ring end gaps to spec.

  • Observe ring marks and piston orientation arrow; deburr ports if needed.

  • Measure squish clearance and compression; adjust with gasket thickness or spacers as required.

  • Torque cylinder/head fasteners in sequence; complete careful heat-cycle break-in, then re-check torque and compression.

  • For long-stroke builds, verify deck height/port timing and gasket stack before final assembly.

Power You Can Trust.