Fighting the Fitment: Installing a Large-Capacity IMS Resin Fuel Tank on the KLX250 (LX250S)!
Vehicle: Kawasaki KLX250 FI Model (LX250S). Topic: Overcoming the challenges of aftermarket oversized plastic fuel tanks. Details: To extend the riding range for long adventure/trail rides, we accepted a request to install an oversized IMS resin fuel tank. While a classic modification, these American-made aftermarket plastic tanks are notorious for their poor fitment due to material shrinkage and manufacturing tolerances. The mounting holes missed the frame brackets by several millimeters. Furthermore, since this is a Fuel-Injected (FI) model, we had to transplant the delicate OEM fuel pump into the plastic base. Ensuring a perfect, leak-free seal on an uneven resin surface required meticulous shaving of burs and careful, incremental torque sequencing on the sealing O-ring. Verdict: By custom-shaving brackets and utilizing a heat gun to relieve plastic tension, we lined up the tank and original shrouds flawlessly. Tested overnight with zero fuel leaks! Custom work rarely means a simple “bolt-on” process, but the extra effort delivers absolute reliability on the trails.
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