CYCLOCROSS

It just so happens one of Kona's original founders is named Jake. It just so happens Jake is Dutch, and he grew up racing road and cyclocross since he was a wee lad. So it makes sense that Kona has a long history of making fast, race-ready cyclocross bikes; our Jakes have been winning National Championships around the world for a good many years. For 2012, we bring all that we've learned riding cross into a focused group of bikes that can do it all. We've helped Kona Team Cyclocross racer Helen Wyman to a number three world ranking, and we're here to help you ride wherever you may roam.

major jake

OVERVIEW

We're bumping up the awesome on one of the big stories in cyclocross racing. Introduced last year, our carbon fiber, World-Cup-ready cyclocross racer returns with the same speed and stiffness, but now with a fancier component offering. New for 2012, the Major Jake sees Avid Shorty Ultimate brakes and a Shimano Ultegra tubeless compatible wheelset. The bike ridden by Kona CX Team Member Helen Wyman during her stellar European 2011 cross season, the Major Jake comes as one of the best-valued cross bikes on the market or as a frame only. Boo-ya!

DETAILED SPECS

Frame Material Kona Carbon CX
Sizes 49, 53, 56, 59, 61, 63cm
Rear Shock N/A
Fork Kona CX Full Carbon Race/Tapered Steerer
Crankarms FSA Gossamer Compact BB30
Chainrings 46/36
B/B FSA BB30
Pedals N/A
Chain Shimano 105
Freewheel Shimano Ultegra 11-28 10 spd
F/D Shimano 105
R/D Shimano Ultegra SS
Shifters Shimano Ultegra
Brake Calipers Avid Shorty Ultimate
Front Brake Rotor N/A
Rear Brake Rotor N/A
Brake Levers Shimano Ultegra
Headset FSA No. 57-CX
Handlebar FSA Gossamer
Stem FSA OS150
Seatpost FSA SL250 w/offset
Seat Clamp Kona Clamp
Grips Kona Cork Tape
Saddle WTB Valcon Team
Front Hub Shimano Ultegra Wheelset
Rear Hub Shimano Ultegra Wheelset
Spokes Shimano Ultegra Wheelset
Rims Shimano Ultegra Wheelset
Front Tire Maxxis Mud Wrestler 700x35C Kevlar
Rear Tire Maxxis Mud Wrestler 700x35C Kevlar
Paint Color Carbon & Purple
Extras N/A
UNITS SIZE TTH STA HTA RC FC WB FL OF BBH SO HT BBS FD STACK REACH
mm 49cm 535 74.2° 71.2° 425 595 1012 395 47 288 761 110 BB-30 / 68mm 34.9 525 385
mm 53cm 550 74.2° 72.2° 425 603 1020 395 47 288 795 135 BB-30 / 68mm 34.9 552 393
mm 56cm 565 73.7° 72.2° 425 613 1031 395 47 288 813 155 BB-30 / 68mm 34.9 571 397
mm 59cm 580 73.2° 72.2° 425 623 1041 395 47 288 831 175 BB-30 / 68mm 34.9 590 401
mm 61cm 605 72.7° 72.5° 425 640 1057 395 47 288 845 185 BB-30 / 68mm 34.9 601 418
mm 63cm 615 72.5° 72.5° 425 648 1065 395 47 288 873 200 BB-30 / 68mm 34.9 615 421
GEOMETRY LEGEND: RC = Chainstay Length BBH = Bottom Bracket Height
FC = Front To Center SO = Standover
TTH = Top Tube Length WB = Wheelbase HT = Head Tube Length
STA = Seat Tube Angle FL = Fork Length BBS = Bottom Bracket Size
HTA = Head Tube Angle OF = Fork Offset FD = Front Derailleur Clamp Size
Note: All Specifications Are Subject To Change Without Notice

TECHNOLOGY

Kona Carbon Race

Kona Carbon Race bicycle frames are built at one of the most advanced bicycle manufacturing facilities in the world: Hodaka. In addition to producing cold-forged bicycle and frame components, including wheels for Shimano and Easton, Hodaka employs an industry-leading carbon-fiber fabrication process. Combine Kona's race-proven geometries with one of the lightest, strongest and ride-savvy materials on the planet, then put them in a facility known for its innovation, leadership, and attention to detail, and you have some of the most beautifully riding bicycles around.

We will be producing a new Kona Carbon Race bicycle at Hodaka for 2012. Joining the Kula Watt, our lightning-quick 26-inch hardtail cross-country race bike, and the Major Jake, our top-of-the-line cyclocross race bike, is the King Kahuna hardtail 29er, the fastest big-wheeled mountain bike we've ever made.

  • The Technology: Kona Carbon Race bicycles use Prepeg technology, a specially formulated resin matrix system reinforced with man-made fibers such as carbon, glass and aramid. When cured, the Prepegs used in Kona frames represent an incredibly solid structural material that is highly durable, temperature resistant, exceptionally stiff and lightweight. These resin formulations and fiber-impregnation technologies are designed in concert with Kona's stringent product design requirements, making our bikes the ultimate balance between stiffness, lightness and ride quality.
  • Molding Process: At the bottom bracket, headtube and seat area, Kona Carbon Race frames use special internal silicon shells that increase the compression of carbon fibers layered in the mold. The method prevents the internal formation of wrinkles, another potential breaking point that, when avoided, increases the fatigue resistance of the bike and results in a lighter frame.

Sloping Toptube

Kona recognized the advantages of sloping toptube frame design right from the beginning. Designed by inaugural MTB-Hall-of-Fame legend Joe Murray back in 1988, the very first Konas were some of the first mountain bikes to feature sloping toptubes (STT). As a company we've stayed true to this philosophy, going so far as to pioneer the design in road bikes long before its benefits were understood by most of the industry. Because of the many positives STT design brings to overall bike performance and comfort, you'll find it today throughout our entire line of road, commuter and mountain bikes.

Here's why: Firstly, STT design allows the toptube to be lower, providing more room for correct positioning and free body movement and enabling more standover clearance, which is particularly useful on dual-suspension bikes that have higher bottom brackets. Riders have a more secure riding position, a real benefit when riding downhill sections.

Secondly, a big benefit of STT is a longer and more compliant toptube. As the top and downtube become more parallel, there's less triangulation, resulting in more compliancy. Not only is the frame stronger and more responsive, but it absorbs more shock than frames with horizontal toptubes.

Compact Rear Triangle

Short chainstays and seatstays provide a perfect balance of stability and power transfer when out of the saddle and pedaling hard. Shorter seatstays also have less deflection during braking and accelerate faster than longer stays. The shorter rear triangle also helps the bike to negotiate tight-twisting sections of trail. Our new Entourage short-travel downhill bike is a good example of an incredibly compact rear triangle. Our goal was to create a bike that was easy to jump and trick, and could also corner aggressively. With seatstays measuring just 415mm, we've created one of the most nimble short travel DH bikes in the industry.

Internal Headset

By having the headset bearing located inside the headtube (called zero stack), rather than the top and bottom, we are able to achieve a number of advantages when it comes to front-end stiffness, durability and overall riding performance. The major benefit of an internal headset is the extra layer of protection it provides the bearings against the elements. Additionally, the bearings are commonly available angular contact bearings, which are easily and inexpensively replaced. An internal headset also reduces stack height, so the height of the stem and bars are more adjustable, giving the rider the best fit possible.

Tapered Headtube

For 2012, you'll find a large majority of Kona bicycles featuring zero stack, tapered headtubes. From cyclocross to cross-country, 29ers right through to longer-travel dual-suspension models, like our Entourage and Operator, a tapered headtube provides more support at the intersection of the toptube and downtube, greatly improving stability and overall performance.

The design also offers a more solid interface between forks with tapered steertubes and the bicycle frame itself. More girth at the bottom of the headtube better distributes shock force, prolonging the bearing life of the headset itself. The inherent strength of its triangular design also means a stronger steering position and improved balance, giving the rider more control in rough terrain. A zero stack, tapered headtube also puts strength where the load is going-into the lower headset cup-maximizing bearing durability where it's needed.

Kona Sizing and Fit

Sizing and fit have always been one of the main strengths of the Kona Ride. With more stock sizes available than any other bike company, our size scale is designed to be continuous from platform to platform and is easy to understand from the perspective of the consumer because our simplified system allows easy fine-tuning that creates a perfect marriage of bike and rider.

On our Trail/All-Mountain and XC Race bikes, we feature longer toptubes coupled with shorter stems and slightly shorter headset stack heights. The steps between sizes are at half-inch to one-inch increments, with up to seven sizes that can range from 14 to 22 inches on many models. In the asphalt range, size gaps are at even 15 to 20mm steps. There are still up to six sizes, from 46cm to 61cm on most models.

When it's called for, seat posts are either offset or straight to maximize the reach and power output of the rider. More importantly, our comprehensive bike sizing allows Kona dealers and riders to determine their fit more easily from model to model and category to category.

Lifetime Warranty

Kona warrants to the original owner that their new Kona bicycle frame purchased from an authorized Kona dealer shall be free of defective materials or workmanship for the lifetime of ownership by the original owner. This warranty is limited to five years for carbon fiber frames and three years for electric pedal-assist frames.

During this warranty period, Kona shall repair or replace, at its sole option, the bicycle frame if Kona determines the frame is defective and subject to this limited warranty. The original owner shall pay all labor and shipping charges connected with the repair or replacement of the bicycle frame. Please see the Kona owner's manual, provided with your bicycle, for additional information.

  • Avid Shorty Ultimate brakes
  • Kona Carbon frame set w/ full carbon tapered steerer fork
  • FSA CX cockpit
  • Shimano Ultegra drivetrain
View Helen Wyman Pro Bike Talk
View Helen Wyman - Hoogerheide