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Shimano 679 - Oil Slick
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Shimano 679 - Oil Slick
Shimano 679 - Black
Shimano 891 - Oil Slick
Shimano 891 - Black
SRAM AXS - Oil Slick
SRAM eTap - Oil Sllck
SRAM eTap - Black

SLF Motion
Midsize-Hyper Crit System

Mfg PartNum:
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Backorder: This item is currently out of stock but is available to purchase today as a backorder. 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 backorder 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 backorder can be cancelled by contacting our customer service team.

SLF Motion Midsize-Hyper Crit System

The unique Midsize Hyper Crit System is an Industry First 14-Tooth/14-Tooth complete pulley wheel system.

Designed due to customer demand, the Hyper Crit System provides the benefits of a complete system but yet is a bit smaller than it's big brother, SLF Motion Oversize Hyper Speed System.

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

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    Signature will be required when taking delivery of this product.

    Shimano 679 - Black

    Mfg PartNum: HCS-679-BLK 

    Shimano 679 - Oil Slick

    Mfg PartNum: HCS-679-OIL 

    Shimano 891 - Black

    Mfg PartNum: HCS-891-BLK 

    Shimano 891 - Oil Slick

    Mfg PartNum: HCS-891-OIL 

    SRAM AXS - Black

    Mfg PartNum: HCS-AXS-BLK 

    SRAM AXS - Oil Slick

    Mfg PartNum: HCS-AXS-OIL 

    SRAM eTap - Black

    Mfg PartNum: HCS-ETP-BLK 

    SRAM eTap - Oil Sllck

    Mfg PartNum: HCS-ETP-OIL 

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