November 27, 20187 yr Engine number and contact your nearest knowledgeable dealer...google will do that bit for you?
November 29, 20187 yr Good luck with that !!! Honda/Montesa don't supply a rod kit as a spare part. They expect you to buy the entire crankshaft assembly for some hideous amount of money. I recently replaced the rod on my 260 4RT and used a rod kit from Hot Rods in the USA. Fortunately it is the same rod as a Honda CRF 250X or R (04 to 08). The Hot Rods part number is 8616 and the dimensions are - centre to centre 90mm, small end bore 16mm, big end bore 38mm, small end width 15mm, big end width 17.8mm, pin diameter 30mm, pin length 52.85mm, big end bearing 30 x 38 x 18mm, side thrust washers 1mm. The rod kit includes big end pin, big end bearing, and thrust washers but not the piston pin or clips. It is stronger than original (slightly heavier but runs smooth). Photo shows the original rod on the left. Parts with KRN on them (or KRN in the middle of the part number) come from a CRF250. Hope that helps.
November 29, 20187 yr You may get supply details from this chap - Hydro locked 4RT who managed to get a rod somewhere (in the UK I think).
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