Organizing all the essential Honda XR650R information!
Evan Fell
My name is Evan Fell and my hobby is motorcycle restoration, customization, and riding. This is my site dedicated to the Honda XR650R. I also have another Motorcycle Blog. Or you can find me on Google Plus +Evan Fell
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Posts by Evan Fell
XR650R Front Wheel Bearing Size
Mar 11th
The front wheel bearings on the XR650R are size: ?
The part number is: 6003-2RS
The kits can be purchased from standard vendors like All-Balls. But if you want to go cheap just contact your local bearing shop or Applied Bearings with the part number above and you can get the unbranded part real cheap!
Losing Weight: Put the XR650R on a Diet
Mar 11th
The United States XR650R bikes came from the factory weighing 288 pounds with all fluids but no gas. The Australian XR650R bikes weigh 300 pounds from the factory.
If you’re anal about the weight of your bike there are lots of places to trim a little fat off the BRP.
Here are a few ideas – this list is very incomplete.
- Remove the coolant overflow bottle
- Remove thermostat
- Remove odometer / cable / drive unit
- Install a CRF USD Front End Swap (discussed elsewhere on this site)
- Replace the stock exhaust with aftermarket
- Use lots of Titanium!
The lightest XR650R I’ve heard of is a measured 275 pounds. Pretty freakin’ light!
Simple XR650R Cooling Fan Install
Mar 11th
The XR650R cooling system is quite adequate in most situations. However, in hot climates when riding slow steep trails, or being stuck in traffic, the BRP can get too hot and overheat. Many will try to band-aid the situation with a high pressure radiator cap (which can be read more about elsewhere on this site). But the best fix is to install a fan on the radiator attached to either a temperature controlled switch, or a manual switch on the handlebars.
A cheap route to go is using a SPAL 4″ Paddle Blade Fan built for a 12v system. This will of course require your bike to be producing 12v, so a regulator is needed, and ideally a small battery. This upgrade is optimal for bikes already dual sported. It can however be achieved with just a regulator and small capacitor.
The above mentioned fan is part number VA32-A101-62A and is similar to the fans found on a stock KTM 4 banger. The KTM fan can be used as well, but it is more expensive.
KTM Fan from all their RFS motors looks like this:
KTM Fan Installed:
With a little bending and trimming the SPAL fan can be mounted to the existing tabs on the right radiator of the XR650, then a simple handlebar switch can be installed. The fan doesn’t use much power 124 cfm @ 1.9amps but I always run a 3 amp switch to things just to but super safe. The mounting holes are 3.23″ apart, and the fan thickness is 2.36″. It can be found from vendors on eBay, or through industrial supply companies.
It can also be installed a little more gracefully with a custom bracket made up.
The fans have been confirmed to fit with the Stock gas tank, the Acerbis 6.3 gallon tank, and the IMS 4 gallon tanks. It does NOT fit with the Clarke 4.3 tank.
There are of course other fans of similar size that can work. CMP Racing out of Michigan carries a fan of similar size – though I do not have specific details on it. Looks like this:
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4Strokes .com did a Cooling fan writeup a while back that included dimensions for building a mounting plate for the fan. Here is the PDF: Honda_XR650R_Cooling_Fan_Install_With_Custom_Frame

















