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SLF Motion
Oversize-Hyper Speed System

Mfg PartNum:
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Preorder: This item is not yet in stock but is available for preorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all preorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your preorder can be cancelled by contacting our customer service team.

Proven by the fastest Professional Triathletes in the world, including Tim Don / Ben Hoffman / Braden Currie / Lisa Roberts / and SO many more, it's no wonder why our Oversize Hyper Speed System is quickly becoming the "Go To" Oversize System on the market. Utilizing our unique 14-Tooth/18-Tooth pulley wheel combination, our Oversize Hyper Speed System is designed to provide precise and repeatable shifting along with decreased drivetrain friction. Locally produced aerospace grade carbon fiber cages, CNC machined anodized pulley wheels, and coated hybrid ceramic bearings all combine to provide the lowest friction possible along with durability that's unmatched. Model 679 (Ultegra 6700/6800 and Dura Ace 7900/9000) - Compatible with cassettes up to 28T Model 891 (Ultegra 8000/8050 and Dura Ace 9100/9150) - Compatible with cassettes up to 32T eTap - 11sp - Cassettes up to 32T AXS - Compatible with both Red and Force 12sp - Cassettes up to 33T

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Shimano 679 - Black

Mfg PartNum: HSS-679-BLK 

Shimano 891 - Black

Mfg PartNum: HSS-891-BLK 

Shimano 891 - Red

Mfg PartNum: HSS-891-RED 

Shimano 891 - Silver

Mfg PartNum: HSS-891-SLV 

SRAM AXS - Black

Mfg PartNum: HSS-AXS-BLK 

SRAM eTap - Black

Mfg PartNum: HSS-ETP-BLK 

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