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HSC Ceramics 12+12 Tooth Delrin Pulley Wheels for SRAM 10/11/12 Speed
Free-Spin HSC Ceramic Pulley Wheels – Effortless Speed & Durability
 
Experience the all-new Free-Spin HSC Ceramic Pulley Wheels, designed to deliver unparalleled speed with hassle-free maintenance. Whether spinning in your hand or on your bike, these pulley wheels ensure a seamless, frictionless ride.
 
Crafted from Delrin, these pulley wheels are durable (compared with carbon fibre wheels), lightweight, and ultra-quiet (compared with alloy wheels), making them a reliable and affordable upgrade. While they may not be visually striking like alloy or carbon fibre wheels, they are built to perform flawlessly.
 
12+12 Tooth Delrin Pulley Wheels for SRAM 10/11/12 Speed serve as the oversized and are compatible with SRAM 10-speed to 12-speed systems. The difference is very noticeable when upgrading from stock SRAM pulley wheels to ceramic ones.
 
Larger pulley wheels (13T/15T or more) can marginally reduce power consumption, as shown in laboratory tests. The high-level competitors may find it worthwhile to invest in oversized pulley wheels but for most other occasions, standard-size pulley wheels just work perfectly. 
 
Need Help Choosing?
If you're unsure which pulley wheel fits your system, visit our Select Pulley Wheel page for assistance.

12+12 Tooth Delrin Pulley Wheels for SRAM 10/11/12 Speed

$135.90Price

  • Material Comparison:
    Delrin     – Durable, lightweight, and quiet; an affordable, no-frills option.
    Carbon Fiber – Ultra-light and stylish but slightly noisier and less durable.
    Alloy – Long-lasting with a mild noise increase over Delrin, offering a sleek look.
    Titanium – Premium durability, lightweight, and visually striking but at a higher cost.
     

    Tooth Count & Compatibility:

    11T (Diameter: 42mm) – Fits most systems (short, medium, and long cage).
    12T (Diameter: 46mm) & 13T (Diameter: 51mm) & 15T (Diameter:59mm) – Suitable for medium and long cages.
    14T (49.5mm) – Mostly for MTB setups.

    Larger pulley wheels offer slight efficiency gains and a sleek appearance but require cage compatibility.


    Narrow-Wide Tooth System:
    Designed for SRAM Eagle (2.2mm narrow, 3.7mm wide), while other pulley wheels use a standard narrow-tooth design.

  • Includes:
    - 2 x 12-tooth CNC-machined Delrin wheels (diameter: 48.90mm)
    - HSC hybrid Free-Spin ceramic bearings pre-installed (no lubrication required)
    - ABEC 7 hardened bearing races and Grade 3 Si3N4 ceramic balls
    - Assembled in Australia

    Weight:
    - 19g

    Compatible with:
    - SRAM 10/11 Speed (Force, Red, Rival) *
    - SRAM 12 Speed Road

    * If you are not sure about your SRAM cage bolt size, please select the "SRAM 4mm and 5mm bolt" option as it will come with a separate 4mm sleeve that you can choose to use if it ends up you have got a 4mm bolt on the cage.

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