A trail-loving aluminum e-mountain bike, ready to crank up the fun factor on any terrain, the Cannondale Moterra S4 electric mountain bike is impressively precise and surprisingly agile.
- SmartForm C2 alloy construction with refined butting and precisely controlled tube shapes delivers incredible performance
- SR Suntour XCR 34 fork provides 140 mm of travel up front
- 4-bar link suspension delivers 150 mm of travel, with a crisp pedaling feel, grippy traction on the climbs and supple smoothness on the descents
- Cannondale Tuned Suspension is optimized for e-MTBs
- True all-mountain capability and the integrated power, range and reliability of the Shimano STEPS EP6-series drive system and 504 Wh battery mean you can ride anything
- At just 3.15 kg, the 504 Wh battery offers a great balance of range and weight; weather-sealed compartment keeps the battery dry, safe and easily accessed for in-home charging
- Battery is removable; no tools required for removal
- Easy-to-use Shimano switch unit lets you change assist modes without ever taking your hands from the bar
- Shimano Deore 10-speed shifting with hydraulic brakes
- Fast-rolling 29 in. large-volume tires, wide handlebars, a huge gear range and a great finishing kit sets you up for good times in the dirt
- Easy-to-read display gives all the important information—speed, battery level, mode and more at a glance
- Proper trail-riding frame geometry and true trail-ready components make this rig a blast on everything from rolling hills to hardcore singletrack
- Thru-axle pivot system creates rock-solid connection between both sides of the swingarm—no twist, no flex, just instantaneous response
- 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
- An additional year of free adjustments on e-bikes
- 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 electric bicycles sold at REI include free adjustments for the defined period (one year after purchase date for non-members, or two years for REI Co-op Members)—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation, chain lubrication and e-bike firmware updates. 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 |
|---|---|
| E-Bike Classification | Class 1: pedal assist up to 20 mph |
| Motor | Shimano EP6 |
| Motor Type | Mid-Drive |
| Motor Torque (Nm) | 85 Newton meters |
| Battery Type | Lithium Ion |
| Battery Capacity (Wh) | 504 watt hours |
| Battery Removable | Yes |
| Charge Time (hrs) | 5 hours |
| Pedal Assist Range | 70 miles |
| Mountain Bike Style | Trail |
| Frame | 150 mm travel, SmartForm C2 Alloy, Cannondale Tuned Suspension, removable downtube battery, internal cable routing, 148 x 12 mm thru axle, post mount brake, tapered head tube |
| Bike Suspension | Full Suspension |
| Fork | SR Suntour XCR 34 Boost, 140 mm, Air, rebound adjust, 46 mm offset |
| Fork Travel | 140 millimeters |
| Rear Shock | X-Fusion O2 Pro Air, adjustable rebound, lockout |
| Crankset | FSA E-Bike, 165 mm, Shimano 10-speed, 34T |
| Shifters | Shimano CUES U6000, trigger style, 10-speed |
| Rear Derailleur | Shimano CUES U6000, 10-speed |
| Rear Cogs | Shimano CUES LG600, 11-50T, 10-speed |
| Number of Gears | 10 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Shimano MT200 hydraulic disc, 180/180 mm TR10 Rotors |
| Brake Levers | Shimano MT200 hydraulic disc |
| Rims | WTB STX i25 TCS, 32h |
| Front Hub | Shimano TC500, 15 x 110 mm thru axle, Center Lock |
| Rear Hub | Shimano TC500, 12 x 148 mm thru axle, Center Lock |
| Wheel Size | 29 inches |
| Tires | WTB Breakout Comp, 29 x 2.3 in., DNA compound |
| Tire Width | 2.3 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Cannondale 3 Riser, 6061 Alloy, 15 mm rise, 8 deg. sweep, 4 deg. rise, 780 mm |
| Stem | Cannondale 3, 3D Forged 6061 Alloy, 1-1/8 in., 31.8, 6 deg. |
| Seat Post | TranzX dropper, internal routing, 31.6 mm, 130 mm (S), 150 mm (M-XL) |
| Dropper Post | Yes |
| Saddle | Cannondale Stage 3 |
| Headset | Integrated, 1-1/8 to 1-1/2 in. sealed bearings |
| Chain | Shimano LG500 Linkglide, 10-speed |
| Weight | Unavailable |
| Gender | Unisex |
| S | M | L | XL | |
|---|---|---|---|---|
| Height Range | 5'1" - 5'5" | 5'4" - 5'9" | 5'8" - 6'1" | 6' - 6'5" |
| Reach | 42.5 | 45.0 | 47.5 | 50.0 |
| Stack | 61.7 | 61.7 | 61.7 | 62.6 |
| Effective Top Tube | 57.9 | 60.4 | 62.9 | 65.6 |
| Seat Tube Center-Top | 43.0 | 45.0 | 48.0 | 51.0 |
| Standover Height | 72.7 | 73.5 | 74.5 | 77.0 |
| Head Tube Length | 11.5 | 11.5 | 11.5 | 12.4 |
| Head Tube Angle (degrees) | 65.0 | 65.0 | 65.0 | 65.0 |
| Seat Tube Angle (degrees) | 71.0 | 71.0 | 71.0 | 71.0 |
| Bottom Bracket Height | 35.0 | 35.0 | 35.0 | 35.0 |
| Wheelbase | 120.9 | 123.4 | 125.9 | 128.8 |
| Chainstay | 45.5 | 45.5 | 45.5 | 45.5 |
| Fork Offset | 5.1 | 5.1 | 5.1 | 5.1 |
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.