NOTE:
First of all. Please contact us what you need. We need check and make sure everything in stock.
What's the difference between 52 (we mark A in the options) and 331 (we mark B in the options).
See your gearbox reverse lever.
If you see only 1 lever. That is 52 factory (model A).
If you see 2 levers. Looks very close your forward gear levers. That is 331 factory (model B).
ALMOST ALL THE INSIDE PARTS CANNOT EXCHANGE! DON'T CHOOSE THE WRONG ONE!

VERY IMPORTANT:In this page, all parts for 52 gearbox transmission only. But some parts can also fit for 331. Like the speedometer gear. Or Neutral switch.
As I marked in 331 gearbox transmission page. If you cannot find the parts you need, but can find it here, just contact us. We will help you to check.

Again! DON'T take the wrong one! 52 totally different with 331!

#10 = neutral switch. Some shell haven't it!
#12 = hand shift. Contract us at first. Sometimes we can find short one. Sometimes in long one.
#30 = starting shaft srping.
#31 = 1st & 2nd gear puller fork.
#32 = 2nd shaft.
#33 = 4th speed gear on 2nd shaft.
#34 = joint sleeve.
#35 = 3rd & 4th gear puller fork.
#36 = 2nd shaft link gear.
#37 = 3rd speed on 2nd shaft gear.
#38 = 2nd speed on 2nd shaft gear.
#41 = 1st gear on 2nd shaft.
#46 = joint sleeve.
#48 = seal.
#55 = reverse gear.
#57 = reverse joint sleeve.
#59 = start gear.
#64 = start shaft.
#65 = start brake block.
#77 = 4th speed gear on 1st shaft.
#79 = 1st shaft.

Remark: we just listed the parts customers always asked. If you didn't find you need, just contact us and let us know the page and item number.

All options quantity: for 1 bike use.
Some parts can also use on: URAL M72, DNEPR K750, BMW R71 and some similar bikes.
If the selection show 0, you can double check with me. Maybe I can find, maybe I cannot. Thanks for understand.

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