Clarke Oversize Tank KLX250 Review

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As any dual sport or adventure rider knows, getting out into the country and onto the back roads is why we ride. A requirement for these extended trips is a versatile motorcycle with adequate fuel range. While a Kawasaki KLX250 is solid, do-it-all motorcycle, fuel range is not one of its strong points. With a fuel capacity of approximately 1.9 gallons, riders can expect about 90 miles or so before switching to reserve and heading toward for a gas station.

KLX250 riders wanting to log more miles per fill up can look to Clarke and their 2.7 gallon fuel tank to extend their range and adventure. Clarke has been making extended fuel tanks for decades and is the go-to company for riders wanting to ride in remote areas.

I received the Clarke Tank for my 2007 KLX250 and reviewed the contents and instructions. The first thing that caught my eye was the detailed instructions. Not only did the instructions cover the details of the Clarke tank installation, it also provided several details that are unique to the KLX that made the installation go smoother.

Installation Tips KLX250

Since the KLX250 uses a frame mounted petcock, getting the tank as empty as possible makes installation easier and minimizes the mess.
If your motorcycle is several years old, I would suggest new O-rings for the bottom of the tank, as well as new fuel lines. With the tight location of the fuel lines, replacing these while it was taken apart seemed to make sense.
The tasks that are somewhat tricky are identified, along with suggestions to make them easier. It should be noted that these items are due to the design of the motorcycle, and are equally challenging with the stock tank.

With the tank installed, it was time to attach the seat and radiator shrouds. The workmanship of the Clarke was very obvious when attaching these final items. The radiator shrouds have 4 holes, 3 of which mount to the tank along with the final bolt that attaches to the radiator. All 4 bolts lined up without any twisting or finesse, very unusual for any installation. [More Info]


Shrouds Fitment
True 2.7 gallon capacity as advertised
Added 65 Miles Per Tank
Leak Free Tank
All Parts Included
Detailed Instructions
The shape of the tank does not interfere with a rider’s position, either standing or sitting.
No issues with other accessory products such radiator guards or handlebars.
Quality of fit


Needed extra .030 washer “Most likely seat issue”
Gas cap doesn’t lock like stock cap.

Stock Tank

Main-93 Miles

Reserve-22 Miles


Clark Tank

Main-144 Miles

Reserve-22 Miles


*I was not financially compensated for this post. I received a sample for review purposes. The opinions are completely my own based on my experience.*

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