Cancel

    Open app

    Search

    Critical Mass

    3.1 (14 reviews)
    InexpensiveActive Life, Bikes

    Critical Mass Photos

    You might also consider

    Recommended Reviews - Critical Mass

    Your trust is our priority, so businesses can't pay to alter or remove their reviews. Learn more about reviews.
    Yelp app icon
    Browse more easily on the app
    Review Feed Illustration

    13 years ago

    Helpful 3
    Thanks 0
    Love this 1
    Oh no 0

    18 years ago

    Helpful 20
    Thanks 0
    Love this 15
    Oh no 0

    19 years ago

    Helpful 7
    Thanks 0
    Love this 6
    Oh no 0

    19 years ago

    Helpful 5
    Thanks 0
    Love this 5
    Oh no 0

    19 years ago

    Helpful 6
    Thanks 0
    Love this 6
    Oh no 0
    Photo of jen m.
    3
    18
    0

    19 years ago

    Helpful 3
    Thanks 0
    Love this 2
    Oh no 0

    20 years ago

    Helpful 2
    Thanks 0
    Love this 2
    Oh no 0

    19 years ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0
    Photo of J F.
    2
    139
    0

    18 years ago

    Helpful 2
    Thanks 0
    Love this 2
    Oh no 0
    Photo of Matt B.
    25
    20
    0

    18 years ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0

    17 years ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0

    16 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 1

    19 years ago

    Helpful 7
    Thanks 0
    Love this 9
    Oh no 0
    Photo of sam B.
    34
    12
    0

    18 years ago

    Helpful 2
    Thanks 0
    Love this 3
    Oh no 0

    Ask the Community - Critical Mass

    You might also consider

    Verify this business for free

    Get access to customer & competitor insights.

    Verify this business

    Cambridge Used Bicycles

    Cambridge Used Bicycles

    4.7
    (95 reviews)
    4.6 km
    $$

    Loved this place so much- I got my bike in October 2020 when supply was low but I found the perfect…read morebike for me! Then when I was having problems with my loose wheel, I brought it in a week ago and they came outside and fixed it right up in 5 minutes, no charge! They are so helpful and kind here, 10/10 recommend.

    This shop was highly recommended as the place to go for a stuck seatpost. I e-mailed several weeks…read moreago to ask if they could do this repair, I received a reply that they could, and was given a link to book a service. I booked a service for Monday June 1, the soonest they had available. It didn't occur to me to look at their days/hours, because I had been sent a booking link, and those typically only allow booking when the business is open and has availability. On June 1 I took the afternoon off, biked over from Roxbury, and the place was closed. E-mailed and texted. Received a reply confirming they were closed and blaming the booking company. No real apology, no offer of a discount or anything to make it right, not even an offer to get me in as soon as possible. This is not anything like how I was taught to provide customer service when the business royally screws up and wastes someone's time. EDIT: The owner has now offered me 20% off, though is maintaining that they are confused as to why "the booking company" allowed that booking. The booking link still shows openings every day of the week. Why are you using software that requires contact with a company to make changes rather than the industry standard that lets you make changes to your own availability in your portal any time you want?

    Photos
    Beautiful new bike!
    Beautiful new bike!
    Ed and Vin
    Ed and Vin
    Excited to ride my new bike - Thanks Cambridge Used Bicycles!!

    See all

    Excited to ride my new bike - Thanks Cambridge Used Bicycles!!
    Bikes Not Bombs

    Bikes Not Bombs

    4.0
    (91 reviews)
    6.0 km
    $$

    " Nifty bike shop with a social change mission " If you…read moreneed a bike or a repair this is your place . Check out their site so you can read about them and their mission . The staff is ultra friendly. They have reasonable pricing. It's definitely the at to go . They have a big parking lot; so parking should not be an issue .

    I don't know if I have just had exceptionally bad luck at my BnB visits or not but I have honestly…read morenever been super impressed. Sure, everyone is super friendly and their mission is A+ but for actually buying a bike here...it's a weird experience. I went in recently to get a bike for a kid (preferably used (and I specified this to the salesperson) and was immediately shown a $1200 new bike. After saying that it was too expensive, a (new) (and cheaper) bike was brought out to show the kid that was in a frame 2 sizes too small. We did a test ride, liked the bike, and then when going over more details of the bike, I noticed that the kid was already beyond the height range for the frame (XS frame). Fine. They bring out another size (M frame). We test ride that and it goes well but then a different employee says that THAT frame size was too small and to scale up to a L frame. I did not agree with this assessment. Inside the store, yet a third salesperson recommended we stay at the M, even with accounting for growth. We ended up buying the bike with an accessory that was to be installed upon purchase. We buy the bike, buy the accessory, they take the bike back to tune it up to leave the store. They take a long time to do that with a vague explanation about the rotors and the front brakes but that it was fixed. Awesome. We leave the store and are headed home but then I notice that the accessory wasn't installed. Back we go for another 10-15 minute wait and no real apology for not doing the work right in the first place. Years ago, I went to check out buying a bike (at the old location near Green St.) and the salesperson would only talk to me about single speed bikes even after specifying that I was only interested in a geared bike. Another time I went to pick up a pre-paid special ordered part and the floor salesperson didn't know how to find a special order in the store. I had seen this person on the floor before, so I knew it wasn't, like, their first day, week, or even month. I don't know. Everyone else seems to love this place and maybe I've just had continual bad luck here. 2 stars for everything about the store, the third star is for the mission and programming for kids.

    Photos
    Bikes Not Bombs
    Bikes Not Bombs
    Bikes Not Bombs

    See all

    Critical Mass - active - Updated August 2026

    Loading...
    Loading...
    Loading...