Made in USA, with class-leading engagement and a unique sound.

• 0.52 degree engagement, 690 POE
• Unique high-pitched sound

We score them a 8/10 in loudness, with a unique sound. 

Please note that some customers have had reliability issues with their Hydras. I9 has moved to address this with an updated axle. We recommend Project 321 G3 hubs as a more robust, high-engagement product for a worry-free ownership experience. 

You can read more at the manufacturer’s website: https://industrynine.com/hubs/mountain/hydra-classic-boost-6b-rear/

Weight
Front : 176 grams
Rear : 301 grams

Yama Gravity Rims

Introducing $99 rebuilds - if you smash it, we rebuild your whole wheel for $99. No questions asked.

Yama rims incorporate brand new, hollow-hook technology for a massive 4mm bead. Not only does this give it fantastic impact resistance, but you’re also far less likely to puncture your tyre. These are characteristics previously reserved for carbon - now they’re here, with an unbeatable price tag. 

Made from the same factory in Taiwan that supplies DT with it’s gravity alloy. Inspired by the triangular shape that makes DT rims so reliable. We’ve learned from the best, and upped the game. 

These rims were put through rigorous testing in multiple 2023/24 DH state series and blazed through with flying colours. 

Yama V1 DH rim: 610g for 29" (same as FR541)
Internal Diameter: 30mm

Alpina Raggi Spokes and Nipples

The highest quality spoke and nipples, made in Italy since 1926.

Alpina is famous for its automation, which ensures consistency and quality whilst manufacturing wheel components. Alpina Nyloc nipples are particularly innovative, with a high 12Nm of locking force consistent throughout the lifetime of the nipple, no matter how many times they are adjusted. All Alpina spokes are guaranteed to be made from the highest quality European wire, unlike some of its closest competitors.

The Alpina Lite spoke is a double butted round spoke directly equivalent to the DT Swiss Competition.

The Alpina Ultralite Aero spoke is a bladed spoke directly equivalent to a DT Swiss AeroLite. Swapping to the Ultralite Aero spoke saves approximately 100g on your wheelset.