Sun Ringle SRC Hubs x Duroc 30 29+ Wheelset
Rim:
Front Hub Spacing:
Rear Hub Spacing:
Rotor:
Freehub:
Tubeless Ready:
Fit or driver questions?
- In stock, ready to ship
- Inventory on the way
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Fat Bike Hub Driver
Shimano HG
Fits Shimano 8–11 speed MTB cassettes. This is the most common freehub standard and works with most Shimano and SRAM mountain cassettes, except XD-only cassettes.
SRAM XD
Fits SRAM 11 and 12-speed XD cassettes. Required for cassettes with a 10-tooth small cog and offers a wider gear range. Not compatible with Shimano HG cassettes.
Shimano Micro Spline (MS)
Fits Shimano 12-speed MTB cassettes. Shimano’s 12-speed standard, designed to support a 10-tooth small cog while maintaining strength and durability.
Fat Bike Hub Spacing
Fat bike hubs use wider spacing to clear large tires and frames. Hub sizing describes the axle type and the frame or fork spacing.
Front Hub Spacing
135QR -Uses a 9mm quick release axle with 135mm fork spacing. Common on older fat bikes.
150QR - Uses a 9mm quick release axle with 150mm fork spacing.
15×150mm Thru Axle - Uses a 15mm thru axle with 150mm fork spacing. Stiffer and more secure than quick release.
Rear Hub Spacing
170QR - Uses a 10mm quick release axle with 170mm rear frame spacing. Found on some older fat bikes.
12×197mm Thru Axle - Uses a 12mm thru axle with 197mm rear frame spacing. This is the modern fat bike standard.
How to Read Hub Sizing
Quick Release (QR) hubs use a 9mm or 10mm axle that clamps into open dropouts.
Thru Axle hubs use a solid axle that passes through the frame or fork and threads in.
In a size like 12×197mm:
• 12mm = axle diameter
• 197mm = rear frame spacing
In a size like 150QR:
• QR = 9mm quick release axle
• 150mm = fork spacing
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Designed to convert your winter fat bike into an all season trail machine, these 29+ wheels are built around Sun-Ringle's SRC hubs and Duroc 40 rims, making this tubeless ready wheelset perfect for race day or weekend trail rides. Optimized for 2.6"-3.0" wide tires, these will shed weight and keep the fun rolling all year round! These Sun-Ringle wheels are designed to fit a multitude of frames. Thru-axle not included.
We proudly build and true each wheel by hand here in Milwaukee meaning these wheels are ride ready out of the box.
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- Front Hub: Sun-Ringle SRC Hub, anodized black
- Rear Hub: Sun-Ringle SRC Hub, anodized black
- Freehub body: 9/10/11 speed or XD driver, 30 contact point, 3 pawl
- Rim: Sun-Ringle Duroc 40 tubeless ready, 29" / 622mm, 40mm, 32 hole drilling
- Spokes: Wheelsmith stainless 2.0 mm straight gauge, black
- Nipples: Wheelsmith brass nipples, black
- Hand built in the U.S. by Fyxation
Will this fit my bike?
Check out our fit guide below for some of the most popular fatbikes. Don't see yours? Reach out to us via the chat icon below.
What freehub driver types fit this hub? Shimano HG, SRAM XD, and Shimano Micro Spline options are available.
What does 12×197mm mean? A 12mm thru-axle and 197mm frame spacing, the modern fat-bike rear standard. Therefore, a front hub at 15x150mm is a 15mm thru-axle and 150mm fork spacing.
See more detail on our wheel fitment guide-->