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SRAM Automatix 2 Speed Hub with Freewheel - 120/130mm - 36H

Customer Reviews (1)
2 / 5| Write your review
Product Reviews (1)
Questions & Answers (2) Q & A
Auto shifting you can rely on. Actually 120 OLN with spaces to make upto 130 OLN, if purchased with a wheelbuild please specify OLN required.

This one's a no-brainer. When in riding in dense city traffic, you need to concentrate on the road, not on your shifters. With SRAM's Automatix two-speed hub, you can focus on your lane, and the hub will change gear automatically for you based on your speed. There's no shifter, because the centrifugal clutch chooses your gear automatically. It's a fantastic system for riding around town, with a minimum of terrain changes. If you're on hillier ground, check out the i-Motion 3 instead.

Automatix gets you where you're going, and the centrifugal clutch changes the pace along with you. It delivers automatic two-speed shifting, no shifter required.

SRAM Automatix eliminates the distractions for a ride that's safer, easier, and more fun!

- Two-speed automatic gear hub
- Safe and stress-free system
- No shifter, no cables, no maintenance
- Gears: 2
- Transition: 136%
- Technology Highlights: Mechanical centrifugal clutch
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Product Reviews (1)
Overall Product Rating 2 / 5
Very Optimistic Weight
31 Jan 2014
2 / 5
The hub alone actually weighs 1100g. On top of that you should add the sprocket, washers and nuts.
Questions & Answers (2)
What Size Sprocket Does It Come With?
28 Mar 2016
The photo shows it with a sprocket, so I'm assuming that's included. If so, how many teeth does the included sprocket have? And what chain width(s) will be compatible?
SJS Customer Service:

A 19T sprocket is supplied with the hub, this can be used with 3/32" or 1/8" chains.

Does The Freewheel Need A Bracket And Is It Supplied?
30 Apr 2014
SJS Customer Service:

The freewheel is built into the hub, it is what allows the hub to roll forwards without the chain/ cranks moving with it.