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ProX Piston Kit — 66.36 mm — Suzuki RM250 | Yamaha YZ250/YZ250X

ProX · #PX-7130B · 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

Not in stock right now — special order. Order it now and we email the ship date before we charge you a cent.

Questions? Call the shop: 801-361-3010

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

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Description & features3 features

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

Displacement: 250 cc
Riding Style: Off-Road
Piston Size: 66.36 mm
Skirt Coating: Moly Coated
Type: Standard Size B
Bore - Oversize: Standard
Units: Kit
Piston Material: Aluminum Alloy
Bore Size: 66.40 mm
Compression Ratio: Standard
Engine Type: 2-Stroke
Shipping weight: 0.69 lb
Package size: 3.3 × 3.1 × 3.1 in
Country of origin: Japan

Fitment3 models · Suzuki, Yamaha

Suzuki1 models

RM2502003–2008

Yamaha2 models

YZ2501999–2026
YZ250X2016–2026

Fitment comes from the catalog data for this part. 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-7130B
ProX part #: 01.2321.B
Replaces OEM #: 1P8-11631-00

Shipping

Special order. We email the ship date when you order.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

Questions4 answers

Is it in stock?: It isn’t in stock right now, but we can special-order it. We confirm timing by email when you order, before anything is charged.
How fast will it get to me?: We confirm the ship date when you order. If anything changes, you hear it from us first.
Will it fit my machine?: It’s listed 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’s new and genuine, straight from Salto — ProX part #01.2321.B.