Surly Bikes

Surly Wednesday Fat Bike

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SKU: BK7966

Wednesday is a great all-around fat bike that has the soul of a trail bike and mind of a touring bike

The All-Around Fat Bike

Wednesday sits in the middle of our Trail category, but don’t let that fool you into thinking that’s its only use. With Wednesday, we borrowed elements from some of our Trail and Touring models to create a versatile fat tire trail bike that can truly handle anything you want to attempt.

If you do an equal amount of off-road touring as you do hitting trails, Wednesday’s ability to play both parts equally will suit you well. Or, if you’re looking for a fat bike and don’t need the fattest tires on the market, Wednesday’s 26 x 4.6” tire clearance is just the ticket.

“Any day of the week’s a great day to ride a Wednesday.”

  • Modern mountain standards: stealth dropper post routing, 44mm headtube, suspension correction, front and rear thru-axles
  • Full suite of useful braze-ons: front and rear racks, multiple sets of three-pack mounts, fenders
  • Full-forward, short chainstay position: 26 x 3.8˝ tires on 80mm rims; full-rearward, longer chainstay position: 26 x 4.6˝ tires on an 80mm rim


When you buy a bike from Aventuron, not only will your bike ship for free, but you will receive a bike that is ready to ride out of the box.

We assemble and tune your bike, then repackage it to ship. When you receive your new bike it will be very easy to assemble.  You will have to attach the front wheel, handlebar, seatpost and pedals. Most bikes do not include pedals, but we have an extensive pedal selection.  We are a family-owned and operated business and look forward to having you as a customer.



Frame Surly Wednesday, 100% Surly 4130 Chromoly steel.
Fork Surly Wednesday, Tapered straight blade 4130 Chromoly.
Seatpost Clamp Stainless 33.1 collar, Black


Headset Cane Creek 10
Brakes SRAM Avid BB5 Mechanical, 160mm rotors front & rear
Shifter SRAM SX Eagle 12-spd
Stem Kalloy 31.8
Handlebar OE 31.8mm
Saddle WTB Volt
Seatpost Kalloy 30.9


Crankset SRAM NX Eagle DUB
Bottom Bracket SRAM DUB
Front Derailleur n/a
Rear Derailleur SRAM SX Eagle
Cog or cogset SRAM Eagle 11-50t
Chain SRAM SX Eagle 12-spd


Front hub Novatec 15 x 150mm, 32h, 6-bolt
Rear hub Novatec 12 x 177mm, 32h, 6-bolt
Rims Surly My Other Brother Darryl
Tires Surly Nate 26 x 3.8˝, 60tpi, tubeless ready Surly Nate 26 x 3.8˝, 60tpi, tubeless ready

* Specifications are subject to change without notice

Wednesday Geo

Reach 15.7 16.5 17.2 17.8 18.5
Stack 22.6 22.8 23.1 23.5 23.9
Head Tube Angle 69.0° 69.0° 69.0° 69.0° 69.0°
Head Tube Length 3.7 3.9 4.3 4.7 5.1
Seat Tube Length 12.4 14.4 16.4 18.3 20.3
BB Drop 2.2 2.2 2.2 2.2 2.2
Wheelbase 42.6 43.3 44.2 45.0 45.8
Chainstay Length 17.1 17.1 17.1 17.1 17.1
Top Tube Length, Actual 22.5 22.7 23.2 23.9 24.7
Top Tube Length, Effective 22.4 23.2 24.0 24.8 25.6
Seat Tube Angle 73.5° 73.5° 73.5° 73.5° 73.5°
Standover Height 28.0 29.0 30.5 31.8 33.1
Stem Length 2.4 2.4 2.8 2.8 3.1
Stem Angle
Handlebar Width 27.6 27.6 29.5 29.5 29.5
Crank Length 6.7 6.7 6.9 6.9 6.9
Fork Length 18.4 18.4 18.4 18.4 18.4
Fork Rake 1.9 1.9 1.9 1.9 1.9

*Standover is measured from the top of the TT, at the center, with a tire measuring approximately Ø749mm

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