How Geometry Reveals Differences in "Ways to Play"
With new models and colors arriving, WILDE is garnering increased attention.
One of its signature models, the "Supertramp," is seeing a rise in orders here at Circles Tokyo and is becoming an increasingly common sight on city streets and trails.
A question we are often asked by customers is:
"What makes WILDE so special?"
It's a simple, honest question.
Admittedly, they look like simple, rugged steel bikes. Yet, everyone who test rides one says the same thing:
"They just ride so well," "They seem so versatile," "You can do anything on them."
Where does that versatility come from?
In this article, we want to uncover the "secret to the ride" of the Supertramp by comparing it to the SURLY Karate Monkey, another popular multi-purpose MTB here at Circles.
【1】Why compare these two bikes?
The reason we are comparing the two is quite simple.
Both are designed as "do-it-all MTBs," capable of touring, bikepacking, daily commuting, and hitting the trails.
While their design philosophies differ, they share a deep-seated versatility, allowing you to answer the call of adventure in many different ways with just one bike.
At Circles Tokyo, we’ve increasingly been asked, "Which one is better, the Karate Monkey or the Supertramp?"
So, in this feature, we will take a deep dive into comparing them—covering not just the specs, but also the actual riding feel and the differences in how they can be built up.
【2】Comparing Specs: Shared Philosophies and Distinct Differences
Basic Specifications Comparison
| Item | Supertramp | Karate Monkey |
|---|---|---|
| BB Shell | 73mm | 73mm |
| Rear Dropout Standard | Boost (148mm) | Gnot Boost (Compatible with 142/148/135mm) |
| Head Tube | 44mm | 44mm |
| Tire Clearance | 29×2.6″ | 29×2.5″ or 27.5×3.0″ |
While both bikes embrace modern MTB standards, their common ground is a design focused on versatility.
The Supertramp utilizes the Boost standard and features a modern geometry optimized for rigid forks.
In contrast, the Karate Monkey features SURLY's unique "Gnot Boost," which allows for compatibility with older standards like 142mm, 148mm, and 135mm, offering an incredible "depth of character" when it comes to accommodating various setups.
In other words, if the Supertramp is built around "the bike of today," the Karate Monkey might be described as a design that "embraces both the past and the future."
【3】Understanding "Ride Feel" Through Geometry
(*For easier comparison, we will look at the S-size of each model.)
Geometry Comparison (S-Size Standard)
| Item | Supertramp | Karate Monkey |
|---|---|---|
| Head Tube Angle | 69.5° | 69° |
| Fork Offset | 50mm | 47mm |
| Trail | approx. 84.3mm | approx. 91mm |
| Head Tube Length | 130mm | 100mm |
| Top Tube Length | 591mm | 585mm |
| Chainstay Length | 440mm | 423mm |
| BB Drop | 66mm | 55mm |
| Tire Clearance | Max 29×2.6″ | Max 29×2.5″ or 27.5×3.0″ |
"Handling and Stability" Defined by Head Angle and Trail
| Item | Supertramp | Karate Monkey |
|---|---|---|
| Head Tube Angle | 69.5° | 69° |
| Fork Offset | 50mm | 47mm |
| Trail | approx. 84.3mm | approx. 91mm |
At first glance, these numbers seem like minor differences. However, they result in distinct differences in how the bike actually rides.
The Supertramp has a smaller trail value, making the handling somewhat lighter. It is easy to maneuver through urban stop-and-go traffic or tight corners, making it an ideal setup for those who want a bike that can do it all.
On the other hand, the Karate Monkey, with its larger trail value, offers "solid, straight-line stability." This is a design feature that translates into a sense of security on trail descents and rough surfaces.
These differences significantly shape the "feeling" the moment you start riding.
"Posture" and "Fatigue" Influenced by Head Tube Length
| Item | Supertramp | Karate Monkey |
|---|---|---|
| Head Tube Length (S-Size) | 130mm | 100mm |
The Supertramp's longer head tube (130mm) naturally encourages an upright posture, providing a wider field of vision and a more relaxed riding position.
This is a significant advantage for long-distance touring or city riding.
In contrast, the Karate Monkey offers a more aggressive, forward-leaning position, designed to prioritize quick reactions and a sense of unity with the bike.
For those seeking agile handling on trails, this is truly an ideal specification.
Top Tube Length and Handling Considerations
While there isn't a huge difference in top tube length, we paired the Supertramp with a short stem and wide handlebars (WILDE x NITTO Country Bar).
This setup achieves a balance between "stability" and "quick handling." The handlebars with their backsweep are easy on the wrists and help reduce fatigue even over long distances.
You can keep an upright posture for comfortable cruising, while also enjoying the peace of mind that you can easily navigate the occasional trail descent found on dirt touring routes.
【4】The Hidden Design Intent: "Carrying Capacity"
Chainstay Length and Load Balance
| Item | Supertramp | Karate Monkey |
|---|---|---|
| Chainstay Length | 440mm | 423mm |
The Supertramp’s longer chainstays make it easier to balance when loading up with racks and panniers, and keep the rear end stable.
This is a huge advantage, particularly regarding fender clearance and avoiding interference with cargo.
With its depth of character, it can handle travel-ready builds featuring "fat tires + full fenders," like the Honjo Flat80 fenders and 29x2.4 TERAVAIL Honcho tires we used on the display bike.
While the Karate Monkey’s rear-end handling is more "specialized for trail play," there might be times when it's slightly harder to balance when fully loaded.
【5】The "Quality of the Ride" Beyond the Numbers
Seat Angle and BB Drop: Changes in "Acceleration" and "Cornering Sensation"
| Item | Supertramp | Karate Monkey |
|---|---|---|
| Seat Tube Angle | 73.5° | 73° |
| BB Drop | 66mm | 55mm |
The Supertramp’s 66mm BB drop keeps the rider's center of gravity low, providing stability in corners and on descents.
Also, a lower BB creates a "sensation of being at one with the ground." This is a key element that allows you to speed up with confidence, whether on the road or a forest trail.
The slightly steeper seat tube angle is another characteristic, allowing you to feel efficient pedaling and smooth acceleration, even on dirt.
【6】Choosing the Bike That Fits Your Style
As we have seen, while these two bikes might not seem so different looking only at the numbers, their actual ride feel is clearly distinct.
| Usage Trend | Supertramp | Karate Monkey |
|---|---|---|
| Touring | ◎ | ○ |
| City Riding | ◎ | ○ |
| Trail Riding | ○ | ◎ |
| Load Carrying | ◎ | ○ |
| Comfortable Position | ◎ | ○ |
| Sharp Handling | ○ | ◎ |
The Supertramp is strong for comfort- and stability-focused dirt touring; it’s less fatiguing over long distances and easy to use in the city with its relaxed position. A multi-purpose MTB with a wide range of capabilities, from daily use to dirt touring.
The Karate Monkey offers quick handling and allows for aggressive riding. Furthermore, it is a spec that can also serve for short touring. A multi-purpose MTB more specialized for trail play.
【7】Choosing a Bike That Suits Your "Way of Playing"
Both are exceptionally high-quality, well-rounded models as multi-purpose MTBs.
What kind of riding do you want to center your experience around?
Finding the bike that suits your "way of playing" is the first step toward building a rich, long-lasting relationship with your bike.
The Supertramp is a "Versatile, Deep-Souled Companion"
The Karate Monkey is a "Sharp-Edged, Reliable Battle Buddy"
A bicycle is not just a means of transportation; it might be said that it's a mirror reflecting your style of play.
At Circles Tokyo, we have an actual WILDE Supertramp demo bike available. If reading this article has piqued your interest, we invite you to come by and take it for a ride to experience the difference for yourself.
There is a certain "chemistry" to a bike that specs alone simply cannot convey. That feeling might just be the start of a new chapter for you and your bike.
| Frame | WILDE Supertramp M size |
| Headset | CHRIS KING InSet 7 + CHRIS KING Baseplate Devolution |
| Handle | WILDE Nitto Country Bar |
| Stem | NITTO MT-8 |
| Crank | WHITE INDUSTRIES M30 Cranks |
| Tire | TERAVAIL Honcho Lite & Supple 29 x 2.4 |
| Rim | ASTRAL CYCLING Outback Rim |
| Hub | SHIMANO DEORE XT |
| Main Group | SHIMANO DEORE XT |
| Saddle | BROOKS SWALLOW |
| Seatpost | CANE CREEK ee SILK+ ALLOY |
| Seatpost Collar | CHRIS KING King Seatpost Collar |
