In warehouse stock

Prox Piston Kit — 67.95 mm — Yamaha WR250/YZ250

Prox · #PX-7080B · Top End / Engine

Manufactured in Japan and designed to be OEM replacement
Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances
Kit includes piston, ring kit, wrist pin, and circlips

$132.95

In stock. Ships in 2–4 business days · free shipping over $150.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

Description & features3 features

Piston has reed cut out.

Manufactured in Japan and designed to be OEM replacement
Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances
Kit includes piston, ring kit, wrist pin, and circlips

Specifications14 specs

Bore Size: 68.00 mm
Riding Style: Off-Road
Compression Ratio: Standard
Piston Size: 67.95 mm
Bore - Oversize: Standard
Piston Material: Aluminum Alloy, Cast
Skirt Coating: Moly Coated
Type: Standard Size B
Displacement: 250 cc
Engine Type: 2-Stroke
Units: Kit
Shipping weight: 0.7 lb
Package size: 3.7 × 3.7 × 3.7 in
Country of origin: Japan

Fitment3 models · Yamaha

Yamaha3 models

WR 2501988–1990
WR2501991–1997
YZ2501988–1998

Fitment comes from the distributor’s catalog. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbersOEM cross-reference

Salto part #: PX-7080B
Prox part #: 01.2314.B
Replaces OEM #: 4SR-11631-00

Shipping

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

Questions4 answers

Is it in stock?: Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.
How fast will it get to me?: Usually 2–4 business days by ground.
Will it fit my machine?: The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine Prox?: Yes. It ships new from the same distributors the big online stores buy from — Prox part #01.2314.B.