Within about 50 miles, I was getting a bad popping coming from the swingarm area upon initial drivetrain loading. After reading up I realized the tires, clutch kit, and lift were probably all causing a ton of strain on the u joint. So after some reading I decided a 450 swingarm swap was what i needed. Plus the 28s were rubbing the plastic, and one day I'd like to have 30s on the bike so this would give me some additional clearance later. So I ordered parts based on what I read online. I bought a 450 Swingarm (used off ebay $50, part# 52100-HN0-670), 450 driveshaft ($50 new OEM Honda), 450 foot brake cable ($15 new OEM Honda), All Ballz SwingArm bearing kit (Part# 28-1056 02-04 tapered style bearings) and I bought a Moose Racing U joint for extra strength (part# 1205-0201). Here's the goods:
Close up comparison, Moose on top, OEM Honda 500 on the bottom:
Let's examine these joints a little closer. Moose overall width dimension: 2.112
Stock Honda piece is 2.021
Bearing cap O.D. on the Moose unit: 0.746
Bearing cap on the OEM unit: 0.667.
500 swingarm on the left, 450 arm on the right. I did a quick sand blast and repaint to it as some of the powdercoating has some rust.
500 DS up top and the 450 below.
500 swingarm 9.75 inches
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