In the spirit of everything getting bigger in the world of Ultra4 racing... we are very excited to release the Spidertrax 2-1/4" Thread Aluminum Fill Cap & Steel Bung Assembly. As the title gives away, this MASSIVE 2-1/4" opening let's you easily peak inside the axle housing, great for gear inspect and easy filling.
CNC machined from billet 6061T6, our cap is both sexy and held to high tolerance. A stepped shoulder on the cap makes threading quick & easy, and the larger outer filler cap indents provide a comfortable grip. Assembly comes complete with aluminum cap, steel bung, and o-ring.
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