Slake your thirst for off-pavement adventure aboard the Cannondale Catalyst 4 27.5 bike. A light alloy frame, sporty riding position and wide-range gearing let you head for the hills with confidence.
- Lightweight aluminum frame delivers a refined, nimble feel; SAVE rear triangle, flattened seat and shaped chainstays absorb bumps for a smooth ride
- Fast and fun 27.5 wheels deliver a combination of agility and control
- Front suspension, disc brakes and integrated rack and fender mounts let you take on all kinds of terrain
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Mountain Biking |
|---|---|
| Mountain Bike Style | Cross-country |
| Frame | SmartForm C3 alloy |
| Bike Suspension | Front Suspension |
| Fork | SR Suntour M3030-27 |
| Fork Travel | 75 millimeters |
| Crankset | Prowheel, 24/34/42 |
| Bottom Bracket | Semi-cartridge type, square taper, BSA, sealed bearing |
| Shifters | Shimano EF41 Easyfire, 3 x 7-speed |
| Front Derailleur | Shimano Tourney, 31.8 clamp |
| Rear Derailleur | Shimano Tourney, 7-speed |
| Rear Cogs | Sunrace, 14-34, 7-speed |
| Number of Gears | 21 gear(s) |
| Brake Type | Mechanical Disc Brake |
| Brakes | Jak-7 cable-actuated disc, 160/160mm |
| Brake Levers | Shimano EF41 |
| Rims | DC 6.0, double wall, 32-hole |
| Front Hub | Alloy disc |
| Rear Hub | Freewheel, sealed, loose ball bearings, QR, 32h |
| Wheel Size | 27.5 inches |
| Tires | Innova |
| Tire Width | 2.1 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Alloy, 25mm rise, 700mm, 31.8 |
| Stem | Alloy, 31.8, 8 |
| Seat Post | Alloy, micro-adjust, 27.2 x 350mm |
| Saddle | Cannondale Stage 2 |
| Pedals | Cannondale Platform |
| Headset | Semi-integrated, threadless, 1-1/8 in. |
| Chain | KMC Z51, 7-speed |
| Weight | 31 lbs. 12.8 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
| S | M | L | XL | |
|---|---|---|---|---|
| Height Range | 5'2" - 5'6" | 5'6" - 5' 10" | 5'10" - 6'1" | 6'1" - 6'4" |
| Reach | 41.4 | 43 | 44.7 | 46.3 |
| Stack | 59.4 | 60.8 | 62.9 | 65.2 |
| Effective Top Tube | 59.5 | 61 | 63.3 | 65 |
| Seat Tube Center-Top | 38.1 | 43.2 | 48.2 | 53.3 |
| Standover Height | 75.3 | 78.6 | 81.8 | 85.8 |
| Head Tube Length | 10 | 11.5 | 13.5 | 16 |
| Head Tube Angle (degrees) | 70° | 70° | 70.5° | 70.5° |
| Seat Tube Angle (degrees) | 73° | 73.5° | 73.5° | 74° |
| Bottom Bracket Height | 30.5 | 30.5 | 30.5 | 30.5 |
| Wheelbase | 109.4 | 113.8 | 115.4 | 115.8 |
| Chainstay | 43.5 | 43.5 | 43.5 | 43.5 |
| Fork Offset | 4.5 | 4.5 | 4.5 | 4.5 |
Sizing Notes
Measurements are stated in centimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.