Confluence Flat Bar Altus

$2,699.00 USD

~~$0.00 USD~~ $2,699.00 USD

Size X-Small Small Medium Large X-Large

Confluence Flat Bar Altus opens up more ride opportunities with a MAHLE hub-drive electric assist good for 40Nm of torque. This egravel 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.

Meets UL 2849, and UL 2271 certification

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.

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Bike Key Features

Bar, Stem, Seatpost
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
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On-Bike Storage
Adventures require gear and riders should get to choose whether they carry it on their bike or on their body
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Product Details

Build Kit

Frameset

Frame

Confluence
Color

Black
Fork

Confluence Carbon

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 Altus M2000
Cassette

Shimano HG200-9, 9-speed, 11–36t
Drive Type

Hub-Drive
Chain

KMC Z9
Crankset

FSA Vero Pro, 40t
Shifter

Shimano Altus M2010
Brake Levers

Tektro RS360A
Brake Calipers

Tektro MD-U510/MD-U310
Assist Levels

3
Bottom Bracket

RPM Cartridge Bottom Bracket
Rotors

Tektro TR160-22, 160 mm, 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

32.5 lb (Large frame)

*Specifications are subject to change without notice

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
Rear Brake (Rotor) Flat-mount
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

Support Document links

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

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 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?

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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.

Review Warranty Info

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Confluence Flat Bar Altus