A bent or worn swingarm is not something to shim around. This is the factory rear swingarm for the Sting Offroad and Sting Onroad, carrying the original pivot, axle and shock-mount locations, so rear-end geometry returns to spec once it is in. Typical reasons to fit one are impact damage that has put a bend in the arm, or pivot points that have gone loose with hours.
Fitment is confirmed for TL3000 and TL45 only. The later MX4, MX5 Pro, X3, Komodo and Dragon chassis run different swingarm geometry and will not accept this part.
The swingarm ships on its own. Pivot bushings are a separate item (SKU 1562) and are worth replacing at the same time while everything is apart. Plan on 90-120 minutes for an advanced-level install with a torque wrench and hex keys.
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