Choose standard or over-size bore: Standard Bore, .25mm Over, .5mm Over, .75mm Over, 1.00mm Over, 1.5mm Over. Select the WSM SKU that matches your engine bore.
Option
Bore
WSM SKU
Standard (this listing)
85.00 mm
50-228K
+0.25 mm
85.25 mm
50-228-04K
+0.50 mm
85.50 mm
50-228-05K
+0.75 mm
85.75 mm
50-228-06K
+1.00 mm
86.00 mm
50-228-07K
+1.50 mm
86.50 mm
50-228-09K
OEM References
13101KCY670
Fitment
Fits selected Honda models — see table below.
Honda Off-Road
Model
Engine
Years
TRX-EX
400
1999–2014
Fitment confirmation: Please confirm suitability using the OEM references, fitment guide and product images before ordering.
