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Salsa Confluence 1.1 Flat Bar Altus 1x9

Salsa Confluence 1.1 Flat Bar Altus 1x9
  • Color: Black
Color: Black
Size: Select size
Please select options Unavailable


Confluence Flat Bar Altus opens up more ride opportunities with a MAHLE hub-drive electric assist good for 40Nm of torque. This e-gravel bike features comfortable, confident upright geometry and a flat handlebar for leverage and control. The aluminum frame and carbon fork strike a balance of durability and performance you’ll appreciate, with frame and fork cargo mounts to keep you fueled on those longer rides, or to load up with bikepacking gear. Shimano’s Altus 1x9 drivetrain is a proven workhorse that will get you through any ride without a fuss. Charge Your Adventure with Confluence Flat Bar Altus.


- 6061-T6 alloy frame
Confluence’s aluminum alloy tubing is developed specifically for the Confluence frame and is heat-treated to T6 alloy standards for extra strength and durability.

- Carbon fiber fork
The Confluence Carbon fork is lightweight, comfortable, cargo-ready, and gives you loads of tire clearance to play with.

- MAHLE X35+ Class 1 hub-drive system
This Class 1 rear hub-drive motor delivers electric assist up to 20mph/32kph. It’s one of the lightest e-bike systems on the market, and its low-profile appearance means that Confluence looks like a regular gravel bike.

- 40Nm max torque
Up to 40Nm of assist that feels natural, not overwhelming. The MAHLE X35+ system offers three assist levels, and sensors detect when you’re pedaling to moderate the level of support generated at the hub.

- 250Wh internal battery
You can’t see it, but you’ll certainly feel it. MAHLE’s 250Wh battery is nestled inside Confluence’s downtube. This battery size hits the ideal combination of efficiency and weight for what we designed Confluence to do.

- Capable of up to 458Wh with MAHLE Range Extender battery? (sold separately)
Easily increase your range for bigger adventures with a Range Extender battery available from MAHLE.

- iWOC One compact remote top tube controller
Minimal and intuitive controller displays battery status and allows you to cycle through assist modes with one button.

- Connected if you want to be
The MAHLE system offers Ant+ connectivity for third-party devices and Bluetooth® for app integration. MAHLE’s MySmartBike app allows for customization, metrics, mapping, and more.

- Massive 700c x 50mm tire clearance
Confluence fits up to 700c x 50mm tires, so you can ride those lesser-traveled tracks. 700c x 42mm maximum tire clearance when equipped with fenders.

- On-bike cargo features
Attach front and rear racks to your Confluence for serious cargo capacity, or use the sleeker Three-Pack mounts for extra water bottles or our EXP Series Anything Cage HD to pack a cooking kit, extra layers, or whatever dream up.

Frame SizeX-SmallSmallMediumLargeX-Large
A. Effective Top Tube (mm) 550 570 600 625 650
B. Stand Over (mm) 622 959 721 761 800
C. Reach (mm) 394 406 424 438 451
D. Stack (mm) 510 538 575 613 650
E. Total Seat Tube Length (mm) 340 380 450 490 530
F. Headtube Length (mm) 90 120 160 200 240
G. Headtube Angle 68.5° 68.5° 68.5° 68.5° 68.5°
H. Seat Tube Angle 73° 73° 73° 73° 73°
I. BB Drop (mm) 70 70 70 70 70
J. BB Height (mm) 285 285 285 285 285
K. Chainstay Length (mm) 440 440 440 440 440
L. Fork Length Axle to Crown (mm) 402 402 402 402 402
M. Fork Offset (mm) 50 50 50 50 50
N. Wheelbase (mm) 1056 1078 1111 1140 1168
Crank Arm Length (mm) 165 170 172.5 172.5 175
Handlebar Width (mm) 700 700 700 700 700
Stem Length (mm) 60 70 70 80 90
Frame SizeRecommended Rider Height (cm)Recommended Rider Height (in)
X-Small 142 - 150 4'9" - 4'11"
Small 152 - 163 5'0" - 5'4"
Medium 163 - 173 5'4" - 5'8"
Large 173 - 183 5'8" - 6'0"
X-Large 183 - 193 6'0" - 6'6"


Frame Confluence
Fork Confluence Carbon
Rims WTB ST i23, 32h
Hubs Front: WTB Serra
Rear: MAHLE X35+
Spokes Straight gauge, black
Tires Teravail Washburn 700c x 42mm, Durable casing, wire bead
Bottom Bracket RPM Cartridge Bottom Bracket
Crankset FSA Vero Pro, 40t
Shifters Shimano Altus M2010
Rear Derailleur Shimano Altus M2000
Cassette/Freewheel Shimano HG200-9, 9-speed, 11–36t
Chain KMC Z9
Brakes Tektro MD-U510/MD-U310
Rotors Tektro TR160-22, 160 mm, 6-bolt
Brake Levers Tektro RS360A
Handlebars Salsa Salt Flat
Tape/Grips Velo VLG-311D2
Stem Salsa Guide
Headset FSA
Seatpost Promax SP-2016
Saddle WTB Volt
Pedals Sold Separately
Motor MAHLE X35+
Battery MAHLE’s 250Wh
Controller/Display iWOC One

* Subject to change without notice.

Part Numbers

Option UPC MPN
Black / X-Small 657993357279 BK2513
Black / Small 657993357262 BK2515
Black / Medium 657993357255 BK2517
Black / Large 657993357248 BK2518
Black / X-Large 657993357231 BK2519