This Mikuni BSR33-66 carburetor rebuild kits contain all the necessary genuine Mikuni components to rebuild your OEM Yamaha Big Bear and Bruin Mikuni BSR33 carburetors.  Includes genuine gaskets, o-rings, screws, and clips however does not contain any jetting.  See the parts list and diagram below, ALL included parts are circled and listed.  Model applications are also listed below.

The BSR33-66 rebuild kit works on ALL of the following models:

• 2005-2006 Yamaha Bruin 250
  
• 2005-2006 Yamaha Big Bear 250
  

All genuine Mikuni jetting available for your carb to add to the rebuild kit.  Please inquire for help with jetting or sizes.  The jetting required by these models is listed below, individual sizes will vary.  Because of this it is always best to check and see what size jet is actually installed before replacing. 

• Mikuni main jets = N102.221
• Mikuni N102.221 Small Round Main Jet

• Mikuni pilot jets = N224.103
• Mikuni N224.103 Pilot Slow Jet

All kits are sold each, select the same amount of kits as you have carburetors to service.

Please feel free to contact us with any additional questions or requests, we are available by direct line, IM, or email. We are available for tuning and setup questions as well as continuing product support after the sale.