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MX Yamaha YZ250 piston Click to zoom

Kit includes: Piston, rings (Riken/NP), circlips, and gudgeon pin

Yamaha

YZ250

'88-'98
Mitaka part number: 91.2314
In Stock
From
£57.89 exc. VAT

Specifications

Dimensions

Bore Size 68.00mm
Crown Height 27.50mm
Overall Length 72.00mm
Dome Height 2.50mm
G.P. Diameter 18.00mm
Port Y/N N
Ring Peg Position 14.25mm
Cutout Height 18.00

Measurement Reference

Piston measurement diagram - side view Piston measurement diagram - top view

Stock & Pricing

Part # Type Stock Price
91.2314.A Standard (Grade A) 95 £57.89
91.2314.B Standard (Grade B) 100 £57.89
91.2314.C Standard (Grade C) 79 £57.89
91.2314.D Standard (Grade D) 17 £57.89
91.2314.05 0.50MM OVERSIZE 97 £57.89
91.2314.10 1.00MM OVERSIZE 100 £57.89
91.2314.15 1.50MM OVERSIZE 100 £57.89
Last updated: 2026-09-13 08:40:06