In stock

Vertex Top End Piston Kit — 53.94 mm — Yamaha YZ125

Vertex · #0910-3379 · Top End / Engine

The piston is heat treated with a T-5 hardening and tempering cycle
The piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
Gravity-cast aluminum alloy (not forged) with 18% silicone content
Cast OE replacement piston
Top end kit includes piston, rings, pins, circlips, top end gaskets, and wrist pin bearing

$208.95

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

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Description & features5 features

Kit Includes:

• Piston Kit

• Top End Gaskets

• Wrist Pin Bearing

The piston is heat treated with a T-5 hardening and tempering cycle
The piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
Gravity-cast aluminum alloy (not forged) with 18% silicone content
Cast OE replacement piston
Top end kit includes piston, rings, pins, circlips, top end gaskets, and wrist pin bearing

Specifications13 specs

Displacement: 125 cc
Riding Style: Off-Road
Piston Material: Cast, Aluminum Alloy
Style: Cast Replica
Units: Kit
Engine Type: 2-Stroke
Compression Ratio: Standard
Piston Diameter: 53.94 mm
Skirt Coating: Molybdenum Disulphite
Cylinder Diameter: 54.00 mm
Shipping weight: 0.75 lb
Package size: 10 × 6.5 × 4.2 in
Country of origin: Italy

Fitment1 models · Yamaha

Yamaha1 models

YZ1251998–2000

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 #: 0910-3379
Vertex part #: VTK22520B
Replaces OEM #: 4XM-11631-30-D0

Shipping

In stock. Ships in 2–4 business days by ground.

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?: Yes — it’s in stock 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?: 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 Vertex?: Yes. It’s new and genuine, straight from Salto — Vertex part #VTK22520B.