Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Steel -
Wheels 27.5" -
Groupset NX -
Suspension Rigid -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility
Suspension Fork
483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade, 4130 CroMoly. 51mm I.S. disc mount
Drivetrain
Rear Derailleur
SRAM Nx
Front Derailleur
None
Shift Levers
SRAM Nx
Cassette
Sunrace 11/42
Crank
SRAM NX 30t
Bottom Bracket
73mm
Chain
KMC X11-1
Wheels
Front Hub
Salsa 110mm, 15mm thru-axle, 32h
Rear Hub
Salsa 148mm, 12mm thru-axle, 32h
Rims
Alex MD40
Tires
Surly Dirt Wizard 27 x 3, 60 tpi
Brakes
Brakes
SRAM Level
Brake Levers
SRAM Level
Cockpit
Stem
Promax, 31.8mm
Handlebar
Answer Pro Taper
Headset
Cane Creek
Seat
Saddle
WTB Volt Sport
Seatpost
Promax 30.9mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.59 mm | 1.49 mm | 1.4 mm | 1.35 mm | 1.3 mm |
| Bottom Bracket Height | 300 mm | 300 mm | 300 mm | 300 mm | 300 mm |
| Front Center | 636 mm | 661 mm | 686 mm | 712 mm | 738 mm |
| Rake | 47 mm | 47 mm | 47 mm | 47 mm | 47 mm |
| Trail | 88 mm | 88 mm | 88 mm | 88 mm | 88 mm |
| Stack | 595 mm | 595 mm | 595 mm | 604 mm | 613 mm |
| Reach | 375 mm | 400 mm | 425 mm | 448 mm | 470 mm |
| Top Tube Length | 558 mm | 583 mm | 608 mm | 633 mm | 658 mm |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 330 mm | 368 mm | 419 mm | 470 mm | 521 mm |
| Head Tube Angle | 69 ° | 69 ° | 69 ° | 69 ° | 69 ° |
| Head Tube Length | 100 mm | 100 mm | 100 mm | 110 mm | 120 mm |
| Chainstay Length | 421 mm | 421 mm | 421 mm | 421 mm | 421 mm |
| Wheelbase | 1051 mm | 1076 mm | 1101 mm | 1127 mm | 1153 mm |
| Bottom Bracket Drop | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm |
| Standover Height | 741 mm | 757 mm | 781 mm | 810 mm | 825 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
Model Overview
Karate Monkey 27.5+ belongs to the Surly Karate model. Surly launched 18 bikes of this model so far. Check out the entire range from 2018 of this model, by clicking this link.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Average price for Trail bikes
According to our calculations, the average cost of a Trail bike that is reliable is 2762$. However, this doesn’t mean that if you spend less money on a Trail bike, you couldn’t get a decent one. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Overview of components
Fork material
The fork is made out of steel, which tends to be more flexible than carbon forks in general. However, a carbon fork is considerably lighter.
Wheels
The Karate Monkey 27.5+ 2018 bike is equipped with 27.5″ aluminum wheels when leaving the factory. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. Surly Karate Monkey 27.5+ has Hydraulic Disc brakes installed. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, these are ideal for anyone.
Sizes
This bike is available in 5 sizes. They vary from 156 cm – 195 cm (5.12 ft – 6.4 ft). In short, you can easily find one that suits you.