Tributary C GRX 820

$5,499.00 USD

~~$5,499.00 USD~~ $5,499.00 USD

Size X-Small Small Medium Large X-Large

Is Tributary C GRX 820 the best bikepacking ebike? We think so. Its Bosch Performance Line Speed drive system and 625Wh battery give you the freedom to take the scenic route more often and cover more ground between sunup and sundown. And the carbon frame with our Class 5 VRS™ design soaks up road vibrations to keep you comfortable during those long days in the saddle. Carry anything from your camping gear to your #CoffeeOutside kit with Tributary’s frame and fork cargo mounts. Shift and brake smoothly with Shimano’s GRX 820 components, designed for rugged gravel road use. If you’re on the hunt for a bikepacking ebike — or just curious about the possibilities — Tributary should be on your packing list.

Meets UL 2849, and UL 2271 certification

Warning for Residents of California

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Bike Key Features

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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Electric Assist
It makes more rides possible
It gives riders the confidence to extend their range
It’s FUN
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Class 5 VRS
Comfort equates to speed and distance over rough terrain
Rider benefit is inherent to the design
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Product Details

Build Kit

Frameset

Frame

Tributary Carbon

Color

Dark Pine/Terra Orange

Fork

Tributary Carbon

Rear Shock

N/A

Components

Headset

Acros

Seatpost

TranzX dropper post, 100 mm travel

Stem

Salsa Guide Trail

Grips/Bar Tape

Velo anti-slip

Saddle

WTB SL8

Handlebar

Salsa Cowchipper

Lights Included

Drivetrain

Front Derailleur

N/A

Rear Derailleur

Shimano GRX RX822

Cassette

Shimano Deore M6100, 10–51t, 12-speed

Drive Type

Mid-drive

Chain

Shimano Deore M6100

Crankset

FSA CK-762, 42t

Shifter

Shimano GRX RX820

Brake Levers

Shimano GRX RX820

Brake Calipers

Shimano GRX RX820

Assist Levels

Rotors

Shimano RT64

Drive Unit

Bosch Performance Line Speed

Ebike Classification

Class 3

Max Assist Speed

28 mph/45 kmh

Motor Torque

85Nm

Max Motor Assist

340% up to 600W

Battery Capacity Watt Hours

625Wh

Battery Type

Bosch PowerTube 625

Removable Battery

Removable for service

Battery Power Volts

36V

Battery Capacity Amp Hours

16.7Ah

Estimated Charge Time

5.4 hours

Charger Included

Yes

Range Estimate

25–100 miles

Throttle

Walk Assist

Yes

Wheels

Front Tire

Teravail Ehline 29 x 2.3″, Durable casing

Rear Tire

Teravail Ehline 29 x 2.3″, Durable casing

Front Hub

Shimano TC500 15 x 110mm

Rear Hub

Shimano TC500 12 x 148mm

Rim

WTB ST i27 (taped, tubeless valves included)

Weight

Complete Bike

42 lb 9 oz for Medium

Geometry

Size	X-Small	Small	Medium	Large	X-Large
A. Effective Top Tube	535.0	560.0	585.0	610.0	635.0
B. Stand Over	725.1	729.7	775.0	808.9	827.4
C. Reach	373.7	398.7	417.6	437.6	457.7
D. Stack	601.8	601.8	624.8	643.2	661.7
E. Total Seat Tube Length	380.0	405.0	460.0	500.0	520.0
F. Headtube Length	100.0	100.0	125.0	145.0	165.0
G. Headtube Angle	100.0	100.0	125.0	145.0	165.0
H. Seat Tube Angle	75.0	75.0	75.0	75.0	75.0
I. BB Drop	70.0	70.0	70.0	70.0	70.0
J. BB Height	303.0	303.0	303.0	303.0	303.0
K. Chainstay Length	445.0	445.0	445.0	445.0	445.0
L. Fork Length Axle to Crown	498.4	498.4	498.4	498.4	498.4
M. Fork Offset	51.0	51.0	51.0	51.0	51.0
N. Wheelbase	1094.4	1119.4	1148.0	1175.8	1203.7
Crank Arm Length	165.0	165.0	170.0	170.0	170.0
Handlebar Width	44.0	46.0	48.0	50.0	52.0
Recommended Rider Height	155.0 - 163.0	163.0 - 170.0	170.0 - 178.0	178.0 - 185.0	185.0 - 193.0
Stem Length	50.0	50.0	50.0	50.0	50.0

Measurements based on:

An unsprung bike (no sag)
A 29 x 2.3" tire measuring 747 mm in diameter
Standover (B) for all sizes is measured vertically to top of toptube from a position

Frame Specs

Design Wheel/Tire Sizes 29"
Max Tire Outer Diameter Tire Clearance Frame: 29 x 2.5"
Tire Clearance Fork: 29 x 3.0"
Frame Construction Carbon
Fork Construction Carbon
Suspension Fork Length (Travel) 498mm A2C (120mm travel)
Fork Offset 51mm
Rear Spacing 12 x 148mm
Rear Axle Size M12 x 175mm, TP=1.0, TL=14mm
Front Brake (Rotor) 180mm
Headset - Upper IS52
Headset - Lower IS52
Front Spacing 15 x 110mm
Front Axle Size 15 x 135mm, TP=M15 x 1.5
Steerer Tube 28.6mm
Crown Race 1.5"
Seatpost 30.9mm
Dropper Post Compatible Yes, internal
Seatpost Clamp 35mm
Front Derailleur Clamp N/A
Front Derailleur Type N/A
Derailluer Hanger SRAM UDH
Crankset (Max Ring) 42t (52mm)
Accessory Mounts Rack Mounts Frame: Yes
Fender Mounts Frame: Yes
Downtube Accessory Mounts: None
Fender Mounts Fork: Yes, with adapter
Bottle Mounts Frame: 2
Fork: 2

Supportive Documents

Support Document links

Additional Features

High-modulus carbon fiber frame

A carbon fiber frame keeps weight to a minimum and provides a custom-tuned blend of stiffness and compliance where it matters.

Class 5™ VRS

Our Class 5 VRS™ (vibration reduction system) design has specially shaped seatstays with a tall, thin, vertically oriented profile that promotes vertical compliance by allowing the seatstays to "flex" outwards on impacts. The horizontally oriented chainstays work to resist torque and maintain a laterally stiff rear end. The seatstays and chainstays lack bridges, furthering the full length of the stays to contribute to flexibility. And a rear thru-axle delivers precise tracking while allowing the seatstays to provide that incredible compliance.

Carbon fiber fork

A 120mm suspension fork smooths out even the rowdiest forest roads.

Bosch Performance Line Speed mid-drive system

Bosch’s Performance Line Speed with smart system is a Class 3* motor that delivers electric assist up to 28mph/45kph**. The mid-drive system delivers loads of torque and range, and keeps the motor’s weight low and centered on the bike for neutral handling.

85Nm max torque

The Bosch Performance Lined Speed system delivers up to 85Nm of assist, with four customizable assist levels and an integrated speed sensor to control torque output.

625Wh internal battery

The Bosch PowerTube 625 battery offers enough range to get lost on your favorite forest roads. It’s also fully encased in the downtube for added stiffness and a nice, clean look.

Capable of up to 875Wh with range extender battery (sold separately)

The Bosch PowerMore 250 range extender battery bolts to your bottle-cage mounts for an extra 250Wh of assist. More range = more adventure.

Bosch smart system

The Bosch smart system integrates the drive unit, battery, display and control unit. Pair it with Bosch’s Ebike Flow app to customize riding assist modes, enable navigation, and automatically download software updates. Fully connected, fully in control.

Bosch BRC3100 system controller

29 x 2.6” tire clearance

The Tributary frame fits up to a 29 x 2.6” tire (29 x 2.4” with fenders). You’ll love the traction and compliance of larger tires on rugged roads at the higher speeds ebikes allow.

Built for cargo

Tributary fits two bottles inside the frame on all sizes, and offers plenty of frame bag space. Extra thirsty? Mount bottles to the Three-Pack mounts on the fork. Mount our Anything Cage HD to the fork to carry your cook kit, extra layers, sleeping pad, or whatever else you can strap to it. For heavier touring loads, outfit Tributary with front and rear racks.

Internal Dropper Post Routing

Tributary welcomes 30.9mm dropper posts and keeps it tidy with internal cable routing. When the going gets technical, get low.

SRAM UDH Compatible

This derailleur hanger design allows for SRAM Full Mount derailleurs, optimizes shifting performance, and makes it much easier to replace a bent or broken hanger.

FAQ

What is the Bosch Performance Line Speed Mid-Drive System?

Tributary uses the Bosch Performance Line Speed mid-drive system. This system features a motor built into the bike’s bottom bracket, powered by a battery in the bike’s downtube. It’s one of the lightest, most discreet ebike systems on the market. The Bosch Performance Line Speed system delivers up to 85Nm of torque and is paired with a Bosch 625Wh PowerTube 625 battery. This is a Class 3* system that only provides electric assist up to 28mph/45kph*.

What is the range?

Ebike range depends on many factors, including rider and equipment weight, weather conditions, route choice, assist level, and more. Bosch’s Range Calculator offers the most accurate range estimate possible. Click through the tabs on the right to customize your inputs. In the “eBike” tab, adjust the settings as follows:

Drive: Performance Line Speed
Battery: PowerTube 625
Type of bicycle: Upright road bike
Tire tread: MTB tires (cross country)

Want to go even farther on a single charge? The Bosch PowerMore 250 range-extender battery (sold separately) can extend Tributary’s range by up to 40%.

How do I maintain my ebike?

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

Tributary C GRX 820