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’ve been using these for several days now and I did notice a difference. I tend to get hot while sleeping, so I was curious if they would actually help, and they do feel cool when you lay on them. I also like that they’re soft and comfortable, not that weird texture some “cooling” products have. So far, I’ve been really happy with them.

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Reviewed in the United States on May 23, 2026

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Larrisa D

Grantham, US

★★★★★ 5

🧊 PERFECT for hot sleepers!! BUY THEM 🤩

Color: 01 - Light Grey, Color: 01 - Light Grey

🧊🧊 baby 🤩😍 I am OBSESSED!! Pillow whore here 🤭 and I very rarely find anything worth writing a 5 star review for but let me just save you the time of searching anymore for the PERFECT pillow cases for hot sleepers!!! BUY THEM! 😍 I promise you will NOT be disappointed!! I have spent so much $ on pillow cases over the years, trying to find the perfect cooling ones... These are it!! 🤭🥳

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Reviewed in the United States on May 8, 2026

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Anaruth Suazo

Carnegie, US

★★★★★ 5

It fit perfect

Color: 01 - Light Grey

The pillow case fit correctly. It's a great quality comfortable and very soft. Will definitely buy more.

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Reviewed in the United States on March 29, 2026

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