Wiseco Forged Piston Kit with Gaskets - Yamaha TTR125 (2000-2018) - 55.00mm Bore (+1.00mm Oversize) - 11.0:1 - 4-Stroke
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Wiseco Forged Piston Kit with Gaskets - Yamaha TTR125 - +1.00mm Oversize
Premium Wiseco forged piston kit with complete top-end gasket set for the Yamaha TTR125 trail bike. This is the +1.00mm OVERSIZE (55.00mm) kit - the largest bore option for severely worn cylinders!
⚠️ Maximum Oversize Piston - Cylinder Boring Required
This piston is +1.00mm oversize (maximum). Cylinder must be bored to 55.00mm for proper fit.
Kit Includes
- Piston Kit #4752M05500
- Ring Set #2165XE
- Wrist Pin #S571
- Wrist Pin Retainer Set #CW15
- Gasket Kit #W5962
Bore Size Options
- 54.00mm - Standard (SKU 0903-0742)
- 54.50mm - +0.50mm Oversize (SKU 0903-0740)
- 55.00mm - +1.00mm Oversize (This Kit - Maximum)
Piston Specifications
- Bore Size: 55.00 mm (+1.00mm Oversize)
- Piston Diameter: 54.95 mm
- Stroke Length: 54.00 mm
- Compression Ratio: 11.0:1
- Material: 4032 Aluminum Alloy
- Skirt Coating: Non-Coated
Engine Specifications
- Displacement: 123.7cc
- Engine Type: 4-Stroke
- Weight: 0.95 lbs
Fitment
- TTR125: 2000-2018
- TTR125L: 2000-2009, 2011
- TTR125E: 2003-2009
- TTR125LE: 2003-2009, 2011-2018
- TT-R 125 E: 2000-2002, 2010-2016
- TT-R 125 L: 2010, 2012-2018
- TT-R 125 LE: 2010
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
