Alter Cycles

Bespoke dream bicycles + whole-assed bicycle repair services. Howdy neighbor! We are open 5 days a week M-F.

For your convenience, please make your bicycle service appointment via our website.

Operating as usual


Let us know which trails you want groomed this year!


Set a reminder for an ol classic Bozeman alley cat 11/11 benefitting your community via !

We’re rolling out from and ending here with a potluck houseparty. Come early for free bean water out of the back of an old Ford camper.

Pull together a lil team or go it solo, be prepared to pedal safely around Bozeman in potentially not-great weather for about two hours making stops at various grocers to gather as much food for the holidays as you can carry (expect to spend 20 bucks at least). Oh yeah, there will be a few prizes and an abundance of community respect awarded for various types of being awesome, obvs!

Every year we’re amazed at how much food love is collected and we’re setting an expectation to be blown away this year, let’s bike party! More details to follow.


✨Announcing the Biketober Biketacular Bikathon™️ Sales Event! If you didn’t ride bikes with us this summer, you missed out. Get with it! Get a bike now so you can be ready to rip with us next year!!! We are blowing out all of our overstock of bikes from this year! All Salsa and Benno bikes in-stock are 20-30% off the retail price! We have Cutthroats, Blackthorns, fat bikes, E-cargo and more! Sale goes through October but don’t slack on it, once they are gone they are gone!!!


Let’s put a bow on it, cause that was real nice. We had so much fun riding bikes and creating memories with all of you wonderful individuals this year! Thanks to all of you for making our shop a special place, it means the world to us. Happy Holidays from all of us to all y’all. Alter ❤️’s you.



Hey, look over there! Is that 2021? Sure is!!!

We are super excited to get back to bikes, and really jazzed to see all of you all again! We are back in the shop this week to hit the ground rolling! Bikes are already piling up for us to fix. Don’t be late to the party, we are anticipating a huge rush this winter as people start shaking the frost off their bikes to get ready for spring.

Speaking of Spring, we are so excited to ride with friends again. This is a bicycle shop after all and bicycles are a tool(toy) of all people. Look for some changes in 2021 to our group rides(Oh yeah!) and social events. We have been super quiet on insta for the last year as it seemed like a good time to give space to more important topics. There’s a lot of stuff to work on but if we start with something in common, the bicycle comes to mind, we can build better relationships. Hope to see y’all sooner than later. Happy New Year y’all!


Timeline photos 04/16/2020

These twin Timberjack 20’s are stoked to know there’s a pair of 6 year old twins out there in that don’t even know how stoked they’re about to be! 🏕 🚲 ⛰

Photos from Alter Cycles's post 04/10/2020

David’s already having soooo much fun on his new 650 we just built him this morning! ✨ @ Hyalite Reservoir

Photos from Alter Cycles's post 04/10/2020

Last year we talked about 2020 being the year of the do it all town bike.

is already spoiled by our trail network extending Main Street to the Mountains, but now with less cars on the street and solo excursions departing our doorsteps being what we get for a while... we guess that was pretty accurate, and for sanity, what we as cyclists need!

We just built up this nicely spec’d Journeyman 650b this morning for David, and for once it fit me (Steve, hi 👋) - so I finally got to pedal one around, soooo good! For just under $2k for everything you see here (including the tools, lock, etc in the frame bag) this bike rides like a much more expensive bike. You need one! ...unless you don’t - I’m not your boss. Anyways, we hope you’re well, we miss your face and we’re here for ya if you need us✌️ @ Alter Cycles

Timeline photos 04/08/2020

Remember when we took group photos for granted?

The film about the really really really fun Idaho and went on with a bunch of neat folks two years ago popped up on , go check it out via the link in our profile! put together such a lovely adventure we can’t wait for the next one.

Thanks , , and for the teamwork that made the dream work, and and for capturing the memories! ✨

Timeline photos 02/21/2020

It’s only 30 degrees right now in , but the sun feels like this! ☀️

Spring bike service is in the air, we’d better remember to tear down our personal bikes so they’re ready for spring trips before we’re too busy with yours! 🔧

Timeline photos 01/31/2020

The feels are in the air that bike season is just around the corner!

It’s supposed to be well into the 50’s tomorrow, and reports of conditions just to the west are starting to sound super favorable for an early season on dirt!

If you’re starting to think about getting out, bring your bike in for your tubeless sealant refresh and spring service — we’ll get you turned around quick!

Timeline photos 01/06/2020

Hoping your weekend was as much PURE FUN as this half an hour was a few months back!

Photos from Alter Cycles's post 12/20/2019

It’s warmish today in Bozeman but not this warm.

If it were, it would be prime time to pull up into the weekend and find every single the gap on the trail on my own (, hi 👋) BMX bike in disguise -aka- LT! 🚀

..and then HAPP!EST HOUR aprés here at the shop, naturally. 🍻 @ Bozeman, Montana

Timeline photos 12/16/2019

Omg we ❤️ all of you. Thanks for Friday, that was ✨✨

Timeline photos 12/07/2019

✨...stay tuned.

Timeline photos 11/29/2019

✨ Buy Nothing Pie-Day Happy Hour, the actual beginning to the Christmas season, is tonight at Alter Cycles + .

No, we aren’t open on Black Friday technically, but we want to spread some holiday cheer with all of our friends so happy hour happens as usual, 4-7pm. Feeling extra cheerful? Bring a libation, or a pie, or just bring your self.

We can’t wait to see you. Cheers! ✌️

Photos from Alter Cycles's post 11/22/2019

Our friend John’s late father made him this frame by hand (including all the decals - our kinda human!).

He came to us sharing his dream about taking it on a Divide trip next summer — so we did what we do best to help him have amazing memories with a full service and being his guru through a few simplicity and reliability upgrades he can trust when he’s far from the nearest town.

We wish it was next summer already so we can see some photos and hear stories of his trip! @ Bozeman, Montana

Photos from Alter Cycles's post 11/15/2019

Flyday amirite?

Timeline photos 10/14/2019

Did you know that recently most of the major airlines out of Bozeman allow bike bags as a regular checked bag?!

Our end of season closeout deals and travel bag rentals make for a perfect pair to save on your new gear and have enough left in the bank account to fly south to play bikes once the snow flies!

Timeline photos 09/24/2019

Our last Tuesday of the season is Tuesday (9/24)! 🚲🚲

Join Sklar Bikes and us for a TOWNIE RIDE leaving from the shop at 6 followed by a backyard taco bbq and fire at Steve & Katie’s (they’re turning into pumpkins at 10).

We’ll be riding a mix of gravel / singletrack town trails and pavement at an intermediate pace adding up to around 15 miles or so — then grillin’ tacos 🌮🌮 ($5 if you wanna eat!) and chillin’ (bring a coat!) 🔥🔥

Timeline photos 09/12/2019

We really like the Looney Bin adjustable cage as an ideal choice for town and adventure bicycles. With the ability to hold a can of LaCroix to a Nalgene or a bottle for a dinner party, you’ll have plenty of options to hydrate or dehydrate... that’s up to you.

Timeline photos 09/11/2019

The details are not the details, they make the design. - Charles Eames.

Consideration given to seemingly insignificant connections can make the largest impact to the overall ride quality of a bicycle. A rattling basket and torn bags from sharp edges can be way more annoying than they should be — so we searched around the shop for the best solution to marry a Wald 1392 basket to the 8-pack rack on Kara’s build, finally landing on these cable clamps for a frame.

We know this isn’t very interesting to most, but we’re super nerdy like that. 🤓

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Videos (show all)

🤣 Pro bike check with @seanwiththewind_.B-side from our #swiftcampout with @coalheadwear @tenkararodco @latigocoffee @sw...
God’s Country; Captain’s Log - Day two.....Woke at 9000’ camp after scouting confirmed we were making a new plan A. The ...
“God’s Country; Captain’s Log - Day One”.- Set out for an ambitious 4-day, 130 mile bike packing exploration of Idaho’s ...
“God’s Country; Captain’s Log - Day One…”- Set out for an ambitious 4-day, 130 mile bike packing exploration of Idaho’s ...
Go go gadget @tenkararodco Teton Mini These fishing rods are ridiculously cool..#bikefishing #bikepacking #getoutandfish
Another post happy hour bike dance party is tonight! Late night progressive house set by @coachdjaj + Trey and Steve’s m...
New handlebar tape gives your bike that new car scent you’ve been looking for. #themoreyouknow #alterbozeman #crossbike ...
Thanks for the tiny hangover this morning @bridgercare. Hope your fundraiser was a massive success, you all deserve it f...
This one time at Tokul was super fun. Can’t  wait to get get back into some of that pnw dirt. ...#tokultuesday #knollybi...
Jumping into the weekend. We have beer on tap for your happy hour pleasure at the Alter/Sklar from 5-7. #mountainbikelif...
Being the one, going nowhere. ....#workoutwednesday #pedalyourassoff #bikeshop #offseason #sklarbikes #montanasucksforcy...





605 N Wallace Avenue
Bozeman, MT

Opening Hours

Tuesday 1pm - 6pm
Wednesday 1pm - 6pm
Thursday 1pm - 6pm
Friday 1pm - 6pm

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