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  • The Catalyst 2 will appeal to casual and aspiring riders looking for a versatile, fun and capable dirt companion
  • Refined 6061 aluminum frame saves weight and offers a great feel for your ride
  • 27.5 in. wheels offer a combination of agility and momentum for the best possible blend of fast and fun for all riders
  • Smooth-riding SR Suntour XCT-100-27 suspension fork has 100mm of travel to absorb shock and improve control
  • Platform pedals don't require special shoes to ride
  • Specs are subject to change


All bicycles sold at REI include a free warranty tune-up. New bikes go through a normal break-in period, after which readjustment is important for longevity and performance. Bring your new bike in to your local REI for its free tune-up within 20 hours of use or 6 months from purchase, whichever comes first. Contact your nearest REI bike shop to schedule this important service.

Free shipping & Assembly with REI Store Pickup

Cannondale bikes purchased on must be shipped to and picked up at REI stores which are authorized Cannondale dealers. The bikes are fully assembled and the shipping is free!

See the current list of REI stores which are authorized Cannondale dealers.

View all Cannondale Hardtail Mountain Bikes

REI membership


Best Use Mountain Biking
Mountain Bike Style Cross-country
Frame 6061 aluminum
Bike Suspension Front Suspension
Fork SR Suntour XCT-100-27, 100mm travel
Fork Travel 100 millimeters
Crankset Prowheel, 24/34/42
Bottom Bracket Tange LN 3912, square taper
Shifters Shimano M310 Rapidfire Plus
Front Derailleur Shimano Altus
Rear Derailleur Shimano Acera
Rear Cogs Sunrace, 11-34, 8-speed
Number of Gears 24 gear(s)
Brake Type Hydraulic Disc Brake
Brakes Promax Solve hydraulic disc
Brake Levers Promax Solve
Rims Alex DC 6.0, double wall
Front Hub Alloy Disc, sealed, loose ball bearings, 32h
Rear Hub Alloy Disc, Cassette, sealed, loose ball bearings, 32h
Wheel Size 27.5 inches
Tires Innova 27.5 x 2.0
Tire Width 2.0 inches
Handlebar Shape Riser Bar
Handlebar Cannondale C4 6061 alloy
Stem Cannondale C4 6061 alloy
Seat Post Cannondale C4 6061 alloy
Saddle Cannondale Stage 2
Pedals Cannondale platform
Headset VP 88, threadless
Chain KMC Z51
Weight 31 lbs. 3.2 oz.
Bike Weight Bike weight is based on median size, as sold, or the average of two median sizes.
Gender Unisex

Size chart

Sizing notes

Measurements are stated in centimeters.

Graphic of a bike and its measurements

How we measure bikes

Understanding bike geometry helps you get a perfect fit.

1. Reach

2. Stack

3. Effective Top Tube

4. Seat Tube Center to Top

5. Standover Height

6. Head Tube Length

7. Head Tube Angle

8. Seat Tube Angle

9. Bottom Bracket Height

10. Wheelbase

11. Chainstay Length

12. Fork Offset

Rated 5 out of 5 by from Great on and off road Have had this bike for two weeks now and love it. Previous bike was a Cannondale, but 26" tires. Took a bit getting used to with the extra height, but not long. Old bike had grip shifters and rim style brakes, I really like the rapid fire shifters and hydraulic brakes on the new. REI did a great job with the assembly.
Date published: 2016-10-04
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On the REI site, it appears that the [Cannondale Catalyst 2 27.5 Bike - 2017] is only available in frame sizes L and XL. Will there be S and M frame sizes available in the future?

Asked by: kdc123
​As of March 2017, we do not have any plans to restock sizes S and M.
Answered by: REIservice
Date published: 2017-03-28

I'm around 6'1" in height. I'm trying to get a general idea on what size bike to get.  I'm very interested in mountain bikes and new the sport. Any help would be appropriated. I'm looking at the Cannondale Catalyst 2 27.5.  Thank you.  

Asked by: Shep205
The size chart towards the bottom of the page lists XL for someone 6'1". In the chart is also "Standover Height". Since people are not all evenly proportioned body to legs, the standover can be a better indicator for the correct size. See our Expert Advice for details on bike fitting:
Answered by: REIservice
Date published: 2017-06-15

What is the max weight a bike like this can hold?

Asked by: Dkld
This bike has a maximum weight capacity of 300 pounds.
Answered by: REIservice
Date published: 2017-06-02

Can this be shipped to store for free and assembled by cycling department?

Asked by: atfurr
Cannondale bikes can only be shipped to select authorized stores. A list of stores is linked to the upper right of the product description. Upon arrival, the bike shop at the store will fully assemble and test the bike prior to pickup.
Answered by: REIservice
Date published: 2017-02-02

I need a bike best suited for 50/50 street/dirt travel. I'll be traveling long distances (30+ miles) on each surface daily. Is this bike the right choice? Thanks.

Asked by: jtlancer
​Yes, this is a great choice for dirt and road travel.
Answered by: REIservice
Date published: 2017-03-28

How do you change the gear speed?

Asked by: Malikj155
The gears on the Catalyst 2 27.5 Bike are changed via the Shimano M310 Rapidfire Plus Shifters on the handlebars.
Answered by: REIservice
Date published: 2016-06-06

Does the front fork have a lockout?

Asked by: Cybersnow
The SR Suntour XCT-100-27 fork does have lock-out.
Answered by: REIservice
Date published: 2017-05-27
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