Transmission schematic Honda Cb125k2 (general Export)

A new genuine Honda part like this MAIN-SHAFT 5TH GEAR is a guarantee of correct machining and the correct grade of materials used in the manufacturing process - rebuilding the engine and transmission will, with genuine Honda bearings included, be like an insurance policy!
For your entire Honda parts requirements, access our online 'Product Gallery' or where available the online schematic for your model, and take a more informed decision when placing your order.

Renew this 20mm SET RING in conjunction with the other items that make up the complete assembly- Interfacing worn parts with new can cause premature wear or damage to the new items!
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Engine and transmission rebuilding can be a complex and time consuming and a process that once complete will not need attempting again on that engine for years to come!
Part of that process apart from this FOURTH GEAR, is ensuring the correct gaskets, seals and bearings are used. Be sure and only use genuine Honda parts!

Rebuilding engine and transmission is easy - well not exactly, but certainly easier when as many old internal parts are substituted with new!
These particular TRANSMISSION SHAFTS are becoming scarce - don't miss out!

Part of rebuilding any engine usually includes reconditioning the transmission assembly; this will improve performance, reduce transmission backlash and lead to a smoother and quieter ride - replacing this 15MM BEARING BUSH can only improve the results.

When overhauling the transmission, replacing as many of the wear items as possible will simplify the building process and subsequent adjustments required to set up the gearbox correctly. Some of the most vital items includes as many new gear train components like this C-4 GEAR.
This will improve the change quality and help achieve a smooth, quiet running transmission assembly.

If you run or are restoring one of these superb and rare lightweight Honda twins, then you will already be aware of just how scarce parts are becoming for these beguiling models - that said if you wish to order this SECOND GEAR, order sooner rather than later.

This BEARING RING B should be automatically replaced along with the rest of the bearings and bearing components that make up the crankshaft assembly when overhauling the engine.
To find all the consumables and parts relating to your application check out the Products Gallery or the on-line schematic.
You can then specify a more comprehensive order through our user friendly purchasing system with competitive pricing and prompt delivery!
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Specifying a new locating pin will ensure perfect fit with accurate location. The old part may be to worn so why take the chance for such a low price?

Specify GENUINE HONDA fasteners including these precision engineered DOWEL and LOCK PINS and you will be fitting the very highest quality items that will be both easy to fit and enjoy long term durability - Reusing the old items is not advisable!
This is the 10 x 14 KNOCK PIN.