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Trek Soho 4.0



  • Lightweight Hydroformed frames maximize aerodynamics and outlast day-in/day-out city riding.
  • Saddles made for all-day commuting comfort
  • Explore the city in style
  • Natural, head-up riding position maximizes comfort.
  • Five frame sizes for a precision fit.
  • Long-lasting, lightweight and responsive Trek Alpha Black Aluminum.
  • Efficient, fast-rolling 700c wheels.
  • Corrosion-resistant hardware encourages all-weather riding.
  • Built-in top tube bumper defends against city-wear, like pole parking
  • Disc brakes (on all models except single-speed) for stopping power in all weather conditions.

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Frame Size Head Angle Seat Angle EFF Top Tube Chain Stay Bottom Bracket Offset Wheel Base

S 15 in 70.5° 74.5° 54.7 cm21.5 in 44.5 cm17.5 in 26.8 cm10.6 in 4.5 cm1.8 in 105.5 cm41.5 in
S 17.5 in 70.5° 74.0° 54.8 cm21.6 in 44.5 cm17.5 in 26.8 cm10.6 in 4.5 cm1.8 in 105.2 cm41.4 in
M 20 in 71.5° 73.5° 56.5 cm22.2 in 44.5 cm17.5 in 26.8 cm10.6 in 4.5 cm1.8 in 105.3 cm41.5 in
L 22.5 in 72.5° 73.0° 58.1 cm22.9 in 44.5 cm17.5 in 26.8 cm10.6 in 4.5 cm1.8 in 105.4 cm41.5 in
XL 25 in 72.5° 72.0° 59.2 cm23.3 in 44.5 cm17.5 in 26.8 cm10.6 in 4.5 cm1.8 in 105.3 cm41.4 in

Frame Size Trail Stand Over Seat Tube Head Tube
S 15 in 7.0 cm2.8 in 68.6 cm27.0 in 38.1 cm15.0 in 12.5 cm4.9 in
S 17.5 in 7.0 cm2.8 in 72.8 cm28.7 in 44.5 cm17.5 in 14.0 cm5.5 in
M 20 in 6.4 cm2.5 in 77.2 cm30.4 in 50.8 cm20.0 in 16.0 cm6.3 in
L 22.5 in 5.8 cm2.3 in 81.6 cm32.1 in 57.1 cm22.5 in 18.0 cm7.1 in
XL 25 in 5.8 cm2.3 in 85.9 cm33.8 in 63.5 cm25.0 in 20.0 cm

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Alpha Black Aluminum
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Shifters Shimano Alfine, 8 speed
Front Derailleur n/a
Rear Derailleur n/a
Crank Bontrager Nebula 44T w/chainguard
Cassette Shimano 18T
Pedals Alloy body w/alloy cage

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Aluminum taper gauge w/lowrider mounts
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Saddle Bontrager Select City
Seat Post Bontrager Satellite Nebula
Handlebars Bontrager Satellite Plus, 30mm rise
Stem Bontrager Soho, 15 degree
Headset Aheadset Slimstak w/semi-cartridge bearings, sealed
Brakeset Shimano R505, mechanical disc w/Tektro alloy levers
Extras Chainguard
Wheels Shimano M65 disc front hub, Shimano Alfine 8 rear hub; Bontrager Nebula rims
Tires Bontrager Satellite Nebula, puncture resistant, 700x32c; 27 tpi

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Official Trek Website

Users who contributed to this page


Pictures (click to make them grow)

Soho 4.0

Leave Your Comments

April 30, 2008
After a lengthy year of research and shopping I bought a Soho 4.0 from my local bike shop in late March of 2008. I have been riding it for a month now on a daily basis. PROS: The Alfine internal gear hub. Very smooth, this is my first IG bike, and to be honest, I don't know if I'll ever own another derailleur. There are a couple of gears where the step between them seems large, but overall, the range is great for my fairly flat commute. Thumb/index shifters. I didn't want a twist grip shifter, and I'm happy with these. Internal cable routing. Very nice, I'm not sure why more bikes don't offer this. Tires: Puncture resistant with a nice reflective sidewall stripe. CONS: Aluminum is a bit harsh on the bumps. Stock grips don't suit me, I'm shopping for replacements. Have to add fenders and racks as after market options, but there are plenty of attachment points. I'll update here when I've added them.

June 24, 2008
Bike Radar review: http://xrl.us/fqd3o

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