







Has your engine seized up, and do you want to rebuild it with a high-quality engine so you won’t have to take it apart again anytime soon? Then here’s the complete upper engine kit offered by ATHENA to rebuild your HUSQVARNA SMR 250cc, TC 250cc, TE 250cc, TE 310cc, and TXC 250cc. This kit is sold complete as shown in the photo, including the crankshaft, clips, piston rings, piston, gasket, cylinder head, hardware, CDI, and cylinder. This kit is not a big-bore conversion; it retains the same specifications as the original, so it has a bore of 83 mm, resulting in a displacement of 300 cc. This kit will allow you to restore your bike to like-new condition and, most importantly, provide a high-quality cylinder that’s just as reliable as the original. However, by choosing this kit, you’ll still see a performance gain compared to the stock setup. You’ll go from 36.8ch with the stock upper engine to 42.3ch with the kit ATHENA. Attached is the power curve so you can see for yourself the difference between the stock engine and the kit ATHENA. It is, of course, of excellent quality, as is customary at ATHENA. The Nikasil coating is truly top-notch, ensuring enhanced reliability. We also carry all the necessary gaskets, piston rings, cylinder heads, and replacement piston dimensions so you can keep your cylinder running as long as possible. Below is a list of vehicles compatible with this kit.
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