Confluence Flat Bar CUES 11
Confluence Flat Bar CUES 11
“Can I squeeze a ride in?” “Do I have the legs to see where this side road goes?” “A ride would feel great, but do I have the energy?” Confluence Flat Bar CUES 11 answers these questions with an “Oh yeah.” Its MAHLE hub-drive system delivers 40Nm of electric assist to give you the extra push you need to ride more. Confluence’s geometry is designed specifically for the extra comfort and confidence you want for riding gravel ebikes at higher average speeds on sketchy roads. The aluminum frame and carbon fork balance weight, comfort, and performance. Cargo and fender mounts let you configure your Confluence your way. The Shimano CUES 11-speed drivetrain tops it all off with smooth shifting and massive gear range. Charge Your Adventure with Confluence Flat Bar CUES 11.
- Meets UL 2849, and UL 2271 certification
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Warning for Residents of California
Warning for Residents of California
⚠️ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.












Bike Key Features
-
Bar, Stem, Seatpost
View More- Bar, stem, and seatpost models are spec’d on bikes with the goal of making them as inclusive as possible, such as zero-rise handlebars on small flat-bar bikes to achieve proper stack height
-
On-Bike Storage
View More- Adventures require gear and riders should get to choose whether they carry it on their bike or on their body
Product Details
Build Kit
Frameset
Frame
Confluence
Color
Dark Cyan
Fork
Confluence Carbon Deluxe
Components
Headset
FSA
Seatpost
Promax SP-2016
Stem
Salsa Guide
Grips/Bar Tape
Velo VLG-311D2
Saddle
WTB Volt
Handlebar
Salsa Salt Flat
Lights Included
No
Drivetrain
Front Derailleur
N/A
Rear Derailleur
Shimano CUES U6000
Cassette
Shimano CUES, 11-speed, 11–50t
Drive Type
Hub-Drive
Chain
Shimano LG500
Crankset
FSA Omega Megaexo, 40t
Shifter
Shimano CUES U6000-11R
Brake Levers
Shimano MT201
Brake Calipers
Shimano UR300
Assist Levels
3
Bottom Bracket
FSA BB-4000
Rotors
Shimano RT26, 180mm front, 160mm rear, 6-bolt
Drive Unit
MAHLE X35+
Ebike Classification
Class 1
Max Assist Speed
20 mph / 32 kph
Motor Torque
40Nm
Battery Capacity Watt Hours
250Wh
Battery Type
Li-ion
Removable Battery
Removable for service
Estimated Charge Time
3 hours
Charger Included
Yes
Range Estimate
40 miles
Throttle
No
Walk Assist
No
Wheels
Front Tire
Teravail Washburn 700c x 42mm, Durable casing, wire bead
Rear Tire
Teravail Washburn 700c x 42mm, Durable casing, wire bead
Front Hub
WTB Serra
Rear Hub
MAHLE X35+
Spoke
Straight gauge, black
Rim
WTB ST i23, 32h
Weight
Complete Bike
33 lb (Large frame)
Geometry

Size | X-Small | Small | Medium | Large | X-Large |
---|---|---|---|---|---|
A. Effective Top Tube | 550.0 | 570.0 | 600.0 | 625.0 | 650.0 |
B. Stand Over | 622.0 | 659.0 | 721.0 | 761.0 | 800.0 |
C. Reach | 394.0 | 406.0 | 424.0 | 438.0 | 451.0 |
D. Stack | 510.0 | 538.0 | 575.0 | 613.0 | 650.0 |
E. Total Seat Tube Length | 340.0 | 380.0 | 450.0 | 490.0 | 530.0 |
F. Headtube Length | 90.0 | 120.0 | 160.0 | 200.0 | 240.0 |
G. Headtube Angle |
68.5
|
68.5
|
68.5
|
68.5
|
68.5
|
H. Seat Tube Angle |
73.0
|
73.0
|
73.0
|
73.0
|
73.0
|
I. BB Drop | 70.0 | 70.0 | 70.0 | 70.0 | 70.0 |
K. Chainstay Length | 440.0 | 440.0 | 440.0 | 440.0 | 440.0 |
L. Fork Length Axle to Crown | 402.0 | 402.0 | 402.0 | 402.0 | 402.0 |
M. Fork Offset | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 |
N. Wheelbase | 1056.0 | 1078.0 | 1111.0 | 1140.0 | 1168.0 |
Crank Arm Length | 165.0 | 170.0 | 172.5 | 172.5 | 175.0 |
Handlebar Width | 700.0 | 700.0 | 700.0 | 700.0 | 700.0 |
Recommended Rider Height | 142.0 - 150.0 | 152.0 - 163.0 | 163.0 - 173.0 | 173.0 - 183.0 | 183.0 - 193.0 |
Stem Length | 60.0 | 70.0 | 70.0 | 80.0 | 90.0 |
Measurements based on:
- An unsprung bike (no sag)
- A 700c x 42 mm tire measuring 710 mm in diameter
- Standover (B) for all sizes is measured vertically to top of toptube from a position 50 mm forward of BB center
Frame Specs
- Max Tire Outer Diameter 700 x 50mm
- Frame Construction Aluminum
- Fork Construction Carbon
- Fork Offset 50mm
- Rear Spacing 136mm
- Rear Axle Size 10x1mm
- Front Brake (Rotor) Flat-mount (160mm)
- Headset - Upper IS41
- Headset - Lower IS52
- Front Spacing 12x100mm
- Front Axle Size M12xTP1.5x120mm
- Steerer Tube 350mm
- Crown Race Integrated
- Stem Clamp Yes (internal)
- Seatpost 27.2mm
- Seatpost Clamp 32.0mm
- Front Derailleur Clamp 31.8mm
- Front Derailleur Type Down swing, down pull
- Derailluer Hanger 10x1mm threaded 136mm proprietary spacing/with proprietary derailleur hanger
- Bottom Bracket 68mm BSA threaded
- Crankset (Max Ring) 1x: 42t max (47mm chainline); 2x: 48/33t max (47mm chainline)
- Accessory Mounts Downtube Accessory Mounts: No; Rack Mounts (frame): Yes
- Bottle Mounts 2
- Fork Mounts Bottle Mounts: Three-Pack mounts (two sets); Rack Mounts (fork): Yes
- Front Fender Mounts Yes
- Rear Fender Mounts Yes
Supportive Documents
Additional Features
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 ebike systems in-market, and its low-profile appearance mean 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
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.
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 else you dream up.
FAQ
What is the range?
Ebike range depends on many factors, including rider and equipment weight, weather conditions, route choice, assist level and more. The MAHLE X35+ system paired with a 250Wh battery is designed to offer a range of up to 45 miles (72 kilometers) per charge under ideal conditions. MAHLE range-extender batteries (sold separately) greatly increase the ground you can cover with assist.
What is the Mahle hub-drive system?
Confluence uses the MAHLE X35+ hub-drive system, which features a motor integrated in the bike’s rear hub, powered by a battery in the bike’s downtube. It’s one of the lightest, most discreet ebike systems on the market. The X35+ system delivers 40Nm of torque and is paired with a 250Wh battery. This is a Class 1 system that only provides electric assist up to 20mph.
For more information, visit our Why MAHLE? page.
How do I maintain my e-bike?
Maintenance on an ebike is mostly the same as any other bike, but keep these tips in mind:
- More torque and more miles = more wear: Electric assist puts more strain on components and empowers you to ride more miles, so parts like your chain, brakes, and tires may wear out faster than you’re used to. Check them frequently and replace as you would on any other bike.
- Washing is OK: The motor and battery on your ebike are sealed against water, so you can wash your ebike like you would a regular bike. However, avoid high-pressure hoses and keep the charging port closed to block moisture. Wipe down controllers rather than spraying them directly with water.
- Battery care: Your ebike’s battery will last longer if the bike is stored in a cool, dry place. If storing the bike for long periods of time, try to keep battery charged between 30–60%. The battery will gradually lose charge, so check it periodically and charge as necessary.
- Don’t try motor maintenance at home: If your ebike’s motor, battery, or other electronic components aren’t functioning properly, take them to your local authorized Salsa retailer for service — do not attempt to repair them yourself.
Is my ebike safe to keep in my home?
Yes. The batteries used in Salsa ebikes are UL2849-compliant, meaning they have been tested to the highest standards of safety to prevent electrical shock or fires. Always use the manufacturer-supplied charger for your ebike.
Do you offer touch-up paint?
No, we do not offer touch up paint. Hobby shops or automotive stores are excellent places to find paint. We suggest you test the paint on a scrap piece of metal before using it on your frame.
I crashed and dented (or cracked) my frame. Is it safe to ride?
Stop riding your frame immediately and take it to the nearest Salsa authorized dealer for inspection. A dented or cracked tube represents a structural weakening of the frame, and is a safety risk.
What is the warranty for this bike?
ViewWarranty
Warranty Information
All Salsa products are warranted against manufacturing defects in materials and workmanship from the date of retail purchase of the product, subject to the limitations detailed below.