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Watt-Man
Thermo-Bob 2 - KLR650 All - BK
$245.00
Colour - Black (2011 to 2014, also 1987 to 1996)
This kit fits all KLR650s: From 1987 to current bikes. Please see other kits for Thermo-Bobs which fit other motorcycles.
Kawasaki cut corners in the KLR cooling system, and the Thermo-Bob modifies your cooling system to operate like automotive systems have for decades. In stock form, the KLR runs too cool when ridden in temps below about 80 - 85F. The cooler outside it is, the worse a stock bike is. Plus, the factory cooling system relies on surges of cold coolant every 30 seconds at the bottom of the cylinder to control engine temperature.
The Thermo-Bob is a machined, hard-anodized aluminum external thermostat with a coolant bypass. It allows coolant to bypass the radiator during warm-up, speeding warm-up and eliminating the surges of cold coolant year-round. It also raises the operating temperature at the top of the cylinder to 195°F from 160°F more importantly, it raises the operating temperature at the bottom of the cylinder to 185°F from downright cold, (ie as cold as 30°F). It should eliminate the out-of-round cylinders that are common to the KLR as it ages which usually results in increased oil consumption. The warmer temps should extend engine life as well as increase oil change intervals, and improve economy by a few MPG. It was the first product to ever receive a 10-out-of-10 rating at Patman Racing, and was strongly recommended by the late Cary Aspy, who was the developer of the 685 and 705 KLR big-bore kits. Cary also liked how this gave more consistent carburetor jetting.
*Gold Thermo-Bob shown in contents is just for an example.
Customer Reviews
Average rating:
In stock and on Time!, 7th Feb 2023
Reviewer: Dave Wilks
Easy purchase, and fast shipping.
The Thermo Bob was easy to instal, came with everything I needed for my 2004 KLR. Works as described on the Watt-Man site.
Thermo Bob, 11th May 2022
Reviewer: Tim McMeekin
I ordered the Thermo Bob on my 2022 KLR 650 Gen3, the part came extremely fast, 2 days. The installation and instructions were smooth with no hi-cups. I did not install the temp gauge, I am just trusting the advice from the KLR community.
If you are wondering if you are capable of installing a Thermo Bob; I have worked on my bikes over the years with manuals and YouTube which describes my level of mechanics, and I had no difficulty installing the Thermo Bob. Happy Trails
Izak, 23rd Apr 2022
Reviewer: Izak Venter
Did not install it yet, product came packaged very well, everything is there to install the Thermo Bob, definitely high quality.
Good experience., 3rd May 2021
Reviewer: Greg Fischer
Order this kit for my 2017, everything g worked flawlessly and now temp stays at a steady temp. The service was amazing I will definitely be shopping here again and would highly recommend to new customers. Thank you for the great service and awesome product.
Easy Purchase and Quick Delivery, 17th Dec 2020
Reviewer: Martin Wright
Website was easy to order off, one of the few places that had the Thermobob 2 available. Arrived within a week and was very well packaged, nothing damaged. Haven’t installed yet but don’t expect any issues with the product, it’s well proven and looks as good as it did when it was made. Will definitely come looking for parts at Universal again!
Honest Assistance, 28th Jun 2017
Reviewer: Jared Doll
I had selected and paid for an item online and was then contacted by Rich for some final details. He discovered that it was not quite the right part for me. As they did not have the correct part in stock, he refunded my purchase no problem. Honest sales. Respect. Thank you for your great service even if we could not complete the sale. I guarantee I will stop in to their shop for some other goodies next time I am in Calgary.
Thermo -Bob 11, 28th Jun 2017
Reviewer: Brian Gadbois
Installed this on my 2009 KLR 650. Temperature gauge now moves off the bottom of the dial and runs at about 1/4 way up the dial( approx. 180 degrees) Before installing this the gauge would only move when climbing long steep hills off road. Engine still heats up ( 1/2 way up the dial) when climbing hills off road.
Good to see the higher temperatures during normal operations especially on the highway and when just cruising around town.
Entire unit is quite simple to install but is rather pricey for what you get.
I'd recommend to others and have just purchased another one for the wife's 2013 KLR 650
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