Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2026 SUNN

FLASH S1

A 29″ aluminum frame hardtail trail e-bike with upper mid-range components.
Compare the full range

Manufacturer Price

€2,999($3,488)
Price History
FrameAluminum
SuspensionHardtail, 130mm
ForkSuntour XCM
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetDeore
MotorShimano 600W 85Nm mid-drive
BatteryShimano 500Wh
BrakesFormula Cura Hydraulic Disc
SeatpostDropper
View on sunn.frLearn about SUNN
Add to Comparison
Shop with an Expert at Upway
Where to Buy
Similar Bikes
Top Comparison

View more similar bikes →

Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
FLASH S1
Other Trail bikes
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)

29 mph

FLASH S1

26 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Sizing
SM

5'2" – 5'7"

MD

5'6" – 5'11"

LG

5'9" – 6'2"

🐐 Estimated

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Price History
Geometry
Specs
Build
Frame

INTEGRATED 531WH, ALLOY 6061DB, EDGE TUBING BOOST

Fork

SR SUNTOUR XCM34 130MM BOOST

Travel: 130mm

Spring Type: Coil

Stem

ALUMINIUM 31,8X45MM

Handlebar

ALUMINIUM 31,8X45MM

Saddle

SUNN BY DDK

Seatpost

BRUTE Dropper 130mm (S) / 150mm (M) / 170mm (L/XL)

Type: Dropper

Groupset
Rear Derailleur

SHIMANO DEORE 12V

Crank

SHIMANO M600 170MM 34T

Cassette

SHIMANO DEORE 12V 10/51

Brakes

FORMULA CURA 2 180/180

Type: Formula Cura Hydraulic Disc

Wheels
Rims

MACH1 TRUCKY 30 30MM 32T

Front Hub

MOYEUX 6T SB BOOST

Rear Hub

MOYEUX 6T SB BOOST

Tires

CHAOYANG PERSUADER TR 29X2,4

Electric Components
Motor

SHIMANO EP6 85NM

Battery

SHIMANO EN 500

Rider Notes
Riders Also Viewed

First added March 22

Last updated June 1