OSPW Aero for Shimano 9100 and 8000

Marsoni

M251S

$7499.50

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

OSPW Aero for Shimano 9100 and 8000The worlds fastest Pulley Wheel system just got faster. OSPW Aero features a lifetime warranty and is wind tunnel tested to have 40% less friction compared to a stock derailleur, making it perfect for time trials or triathlons. The OSPW Aero is an industry leading product co developed with one of the worlds leading aerodynamicists; Simon Smart and is chosen by World Champions and top athletes around the world. This OSPW system has handbuilt

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Your OSPW Aero for Shimano 9100 and 8000 orders ship within 1-2 business days.

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Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
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My husband loved these at first. Pros -easy to get on/off -stylish -comfortable -interior/exterior sole construction lasted longer than other more expensive shoes -price is great Cons -after less than a year the mouth of the shoe widened to a point where they slide off way too easy rendering them almost unwearable. -laces cannot be tightened

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Reviewed in the United States on February 9, 2026