Author Topic: MX250 Big end and filter cage  (Read 1642 times)

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Offline Simon1506

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MX250 Big end and filter cage
« on: November 07, 2014, 12:01:02 pm »
Hey Guys, just lunched my 74 MX250 (air filter was stuck up on the back where i couldn't see it and i did a race day battling with a face full of dirt) and when rebuilding it she has a 25mm crank pin and 311 rod. this is not what is in the manual or parts catalouge. i have a new rod and pin but dont have the bearing. are their any more common bearings for it? if not is the 93310-425N4 the correct bearing?
Are there any good aftermarket air filter options for these as my cage is knackered and never seals well?

Cheers
1974 YZ360A- ready to race (but on display)
1975 YZ360B- to be restored
1974 MX250 - everyday racer
1974 CR125M- to be restored (lots needed)
1985 RM125F - restored and my play/race bike

Offline William Doe

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Re: MX250 Big end and filter cage
« Reply #1 on: November 07, 2014, 12:32:18 pm »
Simon I have bought filters from DC plastics and they have come with a new cage included.

Send him a message and ask if cage is included , very helpful to deal with . Don't mess around with satellite importers go straight to DC much better / faster service  .

http://www.dcvmx.com/xcart/product.php?productid=17396&cat=331&page=1
Its only old bike racing FFS get over yourselves





The Artist formerly known as TM Bill

Offline Lozza

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Re: MX250 Big end and filter cage
« Reply #2 on: November 08, 2014, 06:48:10 pm »
What is the big end eye diameter 31 or 32mm
Jesus only loves two strokes

Offline PCMAX

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Re: MX250 Big end and filter cage
« Reply #3 on: November 12, 2014, 08:27:26 pm »
Partzilla lists the bearing as 93310-524K4-00. They have them in stock for $42.77

http://www.partzilla.com/parts/search/Yamaha/Motorcycle/1974/MX250A/CRANK+-+PISTON/parts.html
74 MX250A, 75 CR250, 82 CR125, 82 YZ250J, 84 XR250,