5th Overdrive Gear - .979mm

Marsoni

M251S

$102.34

Get it in 3 business days with 1 day shipping. Friday, May 29

5th Overdrive Gear - .979mm5th. Overdrive Gear for Yamaha XS650 (1973 84), Fits Main shaft 0. 979 mm ONLY. 0. 984 inches or 25 mm (Hole diameter). 24 Tooth 5th. Pinion Gear. Replaces 23T 5th. Pinion Gear Gear fits to stock location and makes fifth gear taller (higher top speed in fifth but less torque and less vibration) but ratios in lower gears remains the same so that acceleration & torque in lower 4 gears remains the same. Cases must be split to install. This is a "Race"

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I bought 5 or 6 of these tops in a variety of patterns and colors to get me through the summer. They're nice but expect smaller than US sizing by about 1 or 1 1/2 sizes. I ordered a larger size with that in mind and it fits to my body with no "loose fit" as shown in the advertisement. The tag on the inside left is extremely annoying and just happens to be the best sewn piece, so remove with care or you'll have a hole in the seam. Ask me how I know. The material has a bit of stretch and is somehow softer to the touch on the outside than on the inside. Other than that, they're comfortable enough, lightweight but kept their shape and size when laundered, nice colors and patterns. One of the tops was a little more vibrant in color than pictured, but overall a good purchase for the price considering I didn't need to drive from store to store trying to find summer tops. Consider the source and look for a few loose threads. Expect shipping delays with customs. My tops came in 3 different shipments over time.

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Reviewed in the United States on May 26, 2026