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2020 Stromer

ST3

A 650b aluminum frame commuter e-bike with modest components and trp hydraulic disc brakes.

Manufacturer Price

US$ 7.499(€ 6.448)
Weight32,6 kg  
FrameAluminum
SuspensionHardtail, 30mm
Wheels650b Aluminum
Drivetrain1 × 11
GroupsetmicroSHIFT, FSA
Motor600W 44Nm hub-drive
Battery814Wh
BrakesTRP Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

62 km/h

ST3

50 km/h

Similar Bikes

Highest gear

(descending)

Sizing
17"

120cm +

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews
Electric Bike Review
Stromer ST3 Review

sep 2020

Price: $7499.00 | Model Year: 2020 | A stealthy urban speed pedelec (L1e-B in Europe) that offers premium design elements, sophisticated pedal assist (measuring pedal torque, terrain incline, and acceleration), keyless activation, GPS theft recovery, and motor tuning via smartphone app. Extremely smooth, quiet, and durable gearless direct drive hub motor from TDCM offers adjustable energy recapture with regenerative braking. Capable 11-speed drivetrain with wide 11-42 tooth cassette, durable Shimano Deore XT derailleur with clutch, upgraded narrow-wide chainring with alloy guard to reduce drops.

Observations
  • A stealthy urban speed pedelec (L1e-B in Europe) that offers premium design elements, sophisticated pedal assist (measuring pedal torque, terrain incline, and acceleration), keyless activation, GPS theft recovery, and motor tuning via smartphone app. Extremely smooth, quiet, and durable gearless direct drive hub motor from TDCM offers adjustable energy recapture with regenerative braking. Capable 11-speed drivetrain with wide 11-42 tooth cassette, durable Shimano Deore XT derailleur with clutch, upgraded narrow-wide chainring with alloy guard to reduce drops.

  • Available in two frame styles (sporty high-step and approachable mid-step), three frame sizes ranging from medium to extra-large, and two refined color schemes (Cool White and Deep Black) with very limited branding and iconography. Comfort oriented touch points include Ergon locking grips and gel saddle, aggressive or upright stem choice, and optional inverted air suspension fork. High-volume moped tires custom made by Pirelli provide stability, comfort, and puncture resistance.

  • Sturdy ultra-bright integrated lights keep you visible offering high and low beam operation for different situations, integrated USB A plug in head tube can a smartphone when using the optional OMNI app. Powerful 203mm hydraulic disc brakes with quad piston front caliper provide excellent stopping power, and brake levers activate bright mode on the rear light. Sturdy tubular fenders, capable Rack Time compatible rear rack, bottle cage bosses on both frame types, and a custom stem that hides wires.

  • Heavier than average, especially with the optional suspension fork upgrade... which costs ~$1k extra. Limited adjustability on the optional air fork (air pressure only). Rear rack is fairly narrow and may not support child carriers. The battery charger is large and heavy, but fills quickly and uses a magnetic plug to reduce damage if snagged. Limited availability through dealers in North America. Smartphone app does not show current speed, range calculator, or GPS trip planning. Battery compartment door will not stay shut if battery is not installed on the bike.

Read Review

Specs
Build
Frame

6061 Aluminum Alloy

Fork

Custom WREN Inverted Air Suspension Fork, 30mm Travel, Manual Pressure Adjust, 36mm Black Anodized Stanchions, Boost 110mm Hub Spacing, 15mm Thru-Axle with 8mm Hex Bolts

Travel30mm

Spring TypeAir

Headset

Integrated, Sealed Cartridge, Tapered 1-1/8" to 1-1/2" (44mm to 56mm Outer Diameter)

Stem

Sporty Urban Stem: +5° Rise 105mm Length, Comfortable Urban Comfort Stem +20° Rise 110mm Length, No Spacers, 31.8mm Clam Diameter

Handlebar

Custom Aluminum Alloy, 0mm Rise, 20mm Back Sweep, 680mm Width

Saddle

Ergon SFC30, Gel, Sized to Match Frame

Seatpost

Rigid Aluminum Alloy (Double Bolt Saddle Clamp), Tapered Aluminum Alloy Shim (38.7mm to 31.6mm)

TypeRigid

Pedals

Aluminum Alloy Platform with Fixed Diamond Pins, B233 K79

Grips

Custom Ergon GS1 Ergonomic, Black, Outer Lock Ring

Groupset
Crank

FSA Gossamer, Forged Aluminum Alloy, 170mm Length, Hollow Spindle, 52 Tooth Narrow-Wide Chainring with Alloy Guard

Shifters

Shimano XT/SLX Microshift 11 Triggers on Right (One-Way High Lever, Four-Shift Low Lever)

Cassette

11 Speed 1x11 Shimano Deore XT Derailleur with DYNA-SYS11 and One Way Clutch, 11-42 Tooth Cassette

Brakes

TRP HD942 Hydraulic Disc with 203mm Carbon Steel Rotors, TRP Quad-Piston Caliper Front and TRP Dual-Piston Caliper Rear, Three-Finger Levers with Ball-Ends and Brake Light Activation and Recoup Regen Activation

TypeTRP Hydraulic Disc

Wheels
Rims

Stromer ST3 Branded ALEXRIMS, Aluminum Alloy, Double Wall, 584x35, 28 Hole Front, 32 Hole Rear

Spokes

Stainless Steel, 14 Gauge, Black with Nipples

Tires

Pirelli Cycl-e ST for Stromer, 27.5" x 2.35" (57-584)

Electric Components
Motor

Weight: 11 lbs (4.98 kg), Brand: SYNO Drive II (TDCM HM-05), Type: Rear-Mounted Gearless Direct Drive Hub, Nominal Output: 600 watts (820 Watt Nominal Output for European Licensed L1e-B Version), Torque: 44 Newton meters

Battery

Weight: 10.4 lbs (4.71 kg), Brand: BQ814 Standard Battery, ST1306A 13INR18/65-6, Voltage: 48 volts, Amp Hours: 15.9 ah (Optional 20.5Ah High Capacity Battery, BQ983), Watt Hours: 814 wh (Optional 983Wh High Capacity Battery, BQ983), Chemistry: Lithium-ion

Display

Stromer OMNI Color, Top-Tube Integrated, Backlit Color LCD, Capacitive Touch Screen, 2" Diagonal

Rider Notes
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First added 3 september

Last updated 3 september

Not listed for 1,534 days