G SQUARED / S&S / KOSMAN BUELL DRAG RACE PACKAGE
The recent history of pro stock bike racing can be divided into three phases.
1. Total domination by four cylinder bikes
These bikes were based on models that hadn't been produced by OEMs in 20 years. After decades of development, it became harder for tuners to extract more horsepower, and whatever horsepower was gained came with increased cost and decreased reliability.
2. The entry of the HD/VHR V-Rod
The introduction of the V-Rod signaled the end of four-cylinder domination. With a combination of hard work, a generous budget, and liberal race rules, the V-Twin V-Rods displaced the four-cylinder bikes at the top of the pro stock pyramid. Despite promises and rumors the V-Rods have never been made available.
3. The 2004 introduction of the G-Squared Buell
The G-Squared Buell uses an S&S pro stock motor housed in a Kosman chassis. With over a year of testing and development, the G Squared/S&S/Kosman package was an immediate racetrack success. These packages were made available for sale at the end of the 2004 season. In 2005 every G Squared customer was able to qualify in the top half of the NHRA pro stock field.
Development
Kosman Specialties is proud of its partnership with G Squared. In 2002, our design and fabrication team, led by Martin Windmill, began work on the prototype chassis/bodywork, which is still being used in the G-Squared Buell ridden by Chip Ellis. The product we now offer is the end product of G Squared development and testing and is offered as a complete rolling chassis with bodywork.
Description and Features
Frame
The frame is a "perimeter" design and is constructed from 4130 chrome-moly steel tubing. It features a removable front section that allows for quick engine changes. A unique rear wheel adjuster and axle design provides added rigidity and reduced weight.
Forks
The inverted forks are designed with unique features and are built exclusively for us by Wrath Motorsports. The fork tubes are placed ahead of the fork assembly, placing more weight farther ahead of the engine. Ride height adjustment is attained by moving the axle carrier blocks higher or lower on the fork tubes.
Wheels
The wheels are billet aluminum hub/centers attached to lightweight rims. The front is 18x2" and the rear is 15x10". The rear wheel is designed to eliminate the need for a center spacer, therefore there is no need to preload the wheel bearings. This design, where the 1¼ " tubular axle is clamped in the sliding adjuster blocks, has the benefit of reducing weight, decreasing bearing drag, and makes wheel adjustment quick and easy.
Calipers and Discs
The four-piston billet calipers are made for us by GMA. They are designed to reduce the drag through the use of adjustable, spring-loaded, brake pad retractors that allow for manual setting for the air gap between the pad and disc. The lightweight, full-floating discs are 8½" in diameter, made from heat-treated stainless steel and scalloped for lightness.
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| 14-Piece NHRA-Approved Bodywork |
The "float" is obtained by "tongue and groove" construction where the ears on the inside of the rotor fit into a machined pocket in the disc center, providing both the float and thrust surface for the disc. The disc is retained by a single snap ring, eliminating the need for complex fasteners and hardware.
Bodywork
Kosman Specialties worked closely with the NHRA to build a body kit based on the Buell XB-9/XB-12. The 14-piece kit, which includes an air box, is constructed from lightweight carbon fiber.
PRICING AND PARTS
Full Race Package
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Frame with full bodywork ... |
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... with body shell removed ... |
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... with scoops and engine cover/air box removed ... |
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... with side panels removed ... |
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... and with all but the fenders and fairing removed. |
The Kosman/Buell chassis is sold as a complete rolling chassis, with all bodywork mounted. It comes as shown in the pictures, with wheelie bars, tires, etc. Three rear sprockets (41-, 42-, and 43-tooth x 630 pitch) are supplied to allow fine tuning of gear ratios.
Price – $34,950
Spares Kit
Every active race team needs spares for race track tuning and repair. Here is our suggested spares kit:
15x10" Rear wheel with disc – Have a "broken in" tire ready and mounted on the wheel.
Wheelie bars – They do not last forever and are easily damaged.
Front frame section with oil tank – You can have your spare engine mounted on the frame section to facilitate quick changes.
Countershaft sprockets – 15- and 16-tooth sprockets machined from 4130 heat treated steel.
Price – $3,950
Bodywork & Chassis Parts
Kosman Specialties has made a substantial investment in the Buell body kit, and the NHRA, recognizing this investment has authorized Kosman Specialties as the sole supplier of NHRA-approved Buell XB-9/XB-12 body kits. To protect the integrity of the products, each body is serialized, with numbers being supplied to the NHRA technical department. The display of the serialized decals on the bodywork is required in order to pass the NHRA technical review.
Although we would like to supply the complete chassis to everyone using the G Squared/S&S engine, we realize that some teams prefer to build their own chassis. Therefore, we are making the complete 14-piece kit available to qualified builders.
Price – $12,500
We also offer components and assemblies necessary to complete the chassis. Prices quoted on request.
Replacement body parts will only be sold to customers having purchased the complete kit, either on a chassis or as a builder's kit. These parts will be supplied at a reduced price to replace damaged or broken parts, and will be sold on an exchange basis only.
Terms
It is our intention to have the Kosman/Buell chassis kits in stock. If they are not in stock, they will be in the build process. With each order, we require a 50% deposit, with the balance due prior to delivery.
Crating
If desired, crating can be supplied. Price is $475 per bike.
Shipping
Prices are F.O.B. Windsor, California. Customer is responsible for insurance and shipping costs.