Cannondale Bad Boy 4 Bike - 2017
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The Cannondale Bad Boy 4 bike is a smooth operator whether it's for your daily commutes or urban joyrides, thanks to a comfortable upright position, easy-shifting drivetrain and powerful disc brakes.
Shop similar productsKey Details
- 6061-aluminum frame, sophisticated alloy crafting techniques and stealth fighter-inspired tube shapes deliver lightweight performance and quick acceleration
- Aggressive urban geometry and flat handlebar offer a responsive, stable ride without feeling twitchy
- Luxe leather grips, high-visibility reflective paint and rack/fender-friendly design are ready for your daily commute
- Shimano 3x8 drivetrain offers snappy shifts through 24 gears to quickly get you up hilly streets and swiftly cruising along bike lanes
- Cannondale mechanical disc brakes make quick work of reducing speed, even in the rain
- NOTE: Specs and images are subject to change based on component availability
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Urban Cycling |
|---|---|
| Frame | 6061 aluminum |
| Fork | Lefty rigid |
| Crankset | Shimano M171, 48/38/28 |
| Bottom Bracket | Tange Cartridge |
| Shifters | Shimano Acera M310 Rapidfire Plus |
| Front Derailleur | Shimano Altus, 34.9 clamp |
| Rear Derailleur | Shimano Acera |
| Rear Cogs | Sunrace CSM558, 11-32, 8-speed |
| Number of Gears | 24 |
| Brake Type | Mechanical Disc Brake |
| Brakes | Cannondale mechanical disc |
| Brake Levers | Cannondale C4 |
| Rims | Cannondale C3 Bad Boy, double wall, 32-hole |
| Front Hub | Cannondale Urban, 32-hole |
| Rear Hub | Cannondale Urban, 32-hole |
| Wheel Size | 27.5 inches |
| Tires | Schwalbe Kojac Race Guard, 27.5 x 1.35 |
| Tire Width | 1.35 inches |
| Handlebar Shape | Flat Bar |
| Handlebar | Cannondale C4, 6061 alloy, flat, 640mm |
| Stem | Cannondale C4, 25.4, 6 deg. |
| Seat Post | Cannondale C4, alloy, 31.6x350mm |
| Saddle | Cannondale Bad Boy Urban |
| Pedals | Cannondale Urban 6point3 died |
| Headset | Tange Si 1-1/8" |
| Chain | KMC Z51, 8-speed |
| Weight | 25 lbs. 4.8 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
| S | M | L | XL | |
|---|---|---|---|---|
| Height Range | 5'0"- 5'3" | 5'6" - 5'9" | 5'9" - 6'0" | 6'0"- 6'3" |
| Reach | 38.6 | 40.9 | 42.3 | 44.6 |
| Stack | 58.9 | 61.8 | 66 | 68.8 |
| Effective Top Tube | 56 | 59.2 | 61.8 | 65 |
| Seat Tube Center-Top | 45 | 49 | 52.5 | 55 |
| Standover Height | 76.2 | 79.2 | 83.3 | 85.8 |
| Head Tube Length | 16 | 16 | 18 | 18 |
| Head Tube Angle (degrees) | 70 | 70 | 70 | 70 |
| Seat Tube Angle (degrees) | 73.5 | 73.5 | 73.5 | 73.5 |
| Bottom Bracket Height | 2.8 | 2.8 | 2.8 | 2.8 |
| Wheelbase | 103.6 | 107 | 109.9 | 113.3 |
| Chainstay | 43.5 | 43.5 | 43.5 | 43.5 |
| Fork Offset | 2.2 | 2.2 | 2.2 | 2.2 |
Sizing Notes
Measurements are stated in centimeters.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
Review this Product
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Cool bike, fixable squeek
Been riding this bike for the last few weeks and I have to say, as the first bike I've owned in a while, I'm always excited to get on and ride it. I did, however, as one of the other reviewers mentioned get the dreaded squeak during my first ride, and it seems to be a common problem among lefty forks. This is pretty fixable on your own, at least for me once I researched a bit. Just remove the wheel (you'll need to take off the brakes first to do that) and lube/oil up the rubber gasket well (mine happened to be grey) and you should be on your way. Otherwise, having a lefty always has people turning heads and it's a great conversation piece.
Fast and fun
If you are looking for a fast fun hybrid bike, this is it. Very nimble with great acceleration. Simply a blast to ride. It rides a bit stiff, but you should know that going in.
Cool Bike
I love this cool and good looking bike. It rides fast. I did a lot of research on this and even called Cannondale to get more product specs. The REI website information is not quite correct. I am told by Cannondale that the 2017 and 2018 models are the same . It is a 27 speed bike, not 24 speed. Crankset teeth are actually 48/36/26 instead of 48/38/28 to help make uphill climbs more easier. The bike will also accept a traditional fork but you have to change the front wheel if you want to do that. The 650b wheels may be smaller in diameter compared to a 700c wheel but the Schwalbe Kojak tires on it are tall enough to make the overall tire diameter pretty close to a 700c tire. The reasoning behind using a 650b wheel is to provide more cushion to the rider since a taller tire is used to make up for the rigid left fork it has. I am 5'6 tall and size small is right for me . A size medium would be too big for my someone of my height. The REI price of $699 is the best price i can find and REI will give you a free tuneup within 6 months of purchase. The bike (size small) weights 25 lbs so it is comparable to other hybrid bikes. Even thought the Shimano Altus shifters are on the lower end of the Shimano line, they work great and the shifting is smooth and precise. Handlebars are a tad wide for my taste but for what this bike is designed for, it is fine. This bike is a keeper and 10 years from now, the style will still remain cool.
I ended up buying three...
Yes. Got one for my son when he went to college after his lesser model from another brand broke down three times in the first two days. He'd delighted with the Bad Boy 4. I noticed that my wife took a liking to it too, ... so I bought one for her 50th birthday. Then, since I had ordered one that was too big for my son but fit me perfectly... yes that's right - my wife and I now have matching Bad Boy 4 bikes. Don't be a hater. I'm still more of a fan of road bikes, but for versatility, this is a sweet, head turning bike.
Seems great, but annoying squeak
Love the bike so far. Fast, stiff and just wants to be ridden. And not sure about the name; the bike is really kind of understated. I don't mind the lefty fork at all, except for one thing: a really annoying squeak. I took it in to my REI, and they said they fixed it, but by the time I was a few blocks away I could tell it was still there. I'll take it back again, but...
Boat Anchor
Might be the heaviest Cannondale I have ever picked up.
2017 Bad Boy 4
Fast, stealthy, and sturdy. I've really enjoyed this bike and have had no issues with it other than the weak Promax brakes. I replaced them with some TRP Hy/Rd's and it stops in half the time now.