Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Steel -
Wheels 27.5" / 29" -
Groupset NX -
Suspension Rigid -
Drivetrain 1 × 11 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
XS
156cm - 166cm
SM
163cm - 174cm
SM
163cm - 174cm
MD
171cm - 182cm
MD
171cm - 182cm
LG
179cm - 189cm
LG
179cm - 189cm
XL
185cm - 195cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Surly 4130 Chromoly Steel, Custom double butted externally flaired tubing. Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility
Suspension Fork
Surly 4130 Chromoly Steel, 483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade, 4130 Chromoly. 51mm I.S. disc mount
Drivetrain
Rear Derailleur
SRAM NX
Front Derailleur
None
Shift Levers
SRAM NX
Cassette
Sunrace 11 speed 11-42t
Crank
SRAM NX 30t
Bottom Bracket
SRAM Power Spline
Chain
KMC X11EL-1
Wheels
Front Hub
Novatec, 32h, Thru-Axle
Rear Hub
Novatec, 32h, Thru-Axle
Rims
WTB ST i40 TCS
Tires
Surly Dirt Wizard 27 x 3”, 60 tpi Tubeless Ready
Brakes
Brakes
SRAM Level
Brake Levers
SRAM Level
Disk Rotors
SRAM Centerline 180/160
Cockpit
Stem
Promax, 31.8mm
Handlebar
Salsa Rustler 31.8mm
Grips
Velo single lock-on
Headset
Cane Creek
Seat
Saddle
WTB Volt Sport
Seatpost
Promax 30.9mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | XS | SM | SM | MD | MD | LG | LG | XL | XL |
|---|---|---|---|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.69 mm | 1.69 mm | 1.57 mm | 1.57 mm | 1.48 mm | 1.48 mm | 1.42 mm | 1.42 mm | 1.37 mm | 1.37 mm |
| Bottom Bracket Height | 311 mm | 330 mm | 311 mm | 330 mm | 311 mm | 330 mm | 311 mm | 330 mm | 311 mm | 330 mm |
| Front Center | 652 mm | 652 mm | 677 mm | 677 mm | 702 mm | 702 mm | 728 mm | 728 mm | 753 mm | 753 mm |
| Rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Trail | 91 mm | 99 mm | 92 mm | 100 mm | 92 mm | 100 mm | 92 mm | 100 mm | 94 mm | 102 mm |
| Stack | 605 mm | 605 mm | 605 mm | 605 mm | 606 mm | 606 mm | 615 mm | 615 mm | 625 mm | 625 mm |
| Reach | 359 mm | 359 mm | 385 mm | 385 mm | 410 mm | 410 mm | 432 mm | 432 mm | 455 mm | 455 mm |
| Top Tube Length | 563 mm | 563 mm | 588 mm | 588 mm | 613 mm | 613 mm | 638 mm | 638 mm | 663 mm | 663 mm |
| Seat Tube Angle | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° | 71.5 ° |
| Seat Tube Length | 330 mm | 330 mm | 368 mm | 368 mm | 419 mm | 419 mm | 470 mm | 470 mm | 521 mm | 521 mm |
| Head Tube Angle | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° |
| Head Tube Length | 100 mm | 100 mm | 100 mm | 100 mm | 100 mm | 100 mm | 110 mm | 110 mm | 120 mm | 120 mm |
| Chainstay Length | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm |
| Wheelbase | 1069 mm | 1069 mm | 1094 mm | 1094 mm | 1119 mm | 1119 mm | 1145 mm | 1145 mm | 1170 mm | 1170 mm |
| Bottom Bracket Drop | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Standover Height | 755 mm | 755 mm | 773 mm | 773 mm | 795 mm | 795 mm | 824 mm | 824 mm | 853 mm | 853 mm |
| Wheels | 27" | 29" | 27" | 29" | 27" | 29" | 27" | 29" | 27" | 29" |
| Rider Min Height | 156 cm | 156 cm | 163 cm | 163 cm | 171 cm | 171 cm | 179 cm | 179 cm | 185 cm | 185 cm |
| Rider Max Height | 166 cm | 166 cm | 174 cm | 174 cm | 182 cm | 182 cm | 189 cm | 189 cm | 195 cm | 195 cm |
Model Overview
Karate Monkey completes the Surly Karate model. Surly launched 18 bikes of this model so far. Check out the entire range from 2019 of this model, by clicking this link.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Average price for Trail bikes
Our math shows that the average cost of a dependable Trail bike is 2762$. However, even though the average price of a Trail bike is lower, you might still be able to get a top-quality bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 2200$. Comparing this to the average Trail bike price, we see that the price is 25.55% lower.
Overview of components
Fork material
The fork is made out of steel, which is tougher than carbon in the case of an impact. However, it can add some extra weight to the bike.
Wheels
When leaving the production line, the Karate Monkey model has 27.5″ aluminum wheels. These wheels will provide you with more control over the bike. However, the 27.5″ wheels are less forgiving than the 29″ wheels.
Brakes
Nothing is more important on a bike than its ability to brake properly. Surly Karate Monkey is equipped with Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, your safety is in good hands.
Sizes
Surly Karate Monkey bike has 10 sizes, in the range of 156 cm – 195 cm (5.12 ft – 6.4 ft). In conclusion, finding one for you shouldn’t be a problem.