100cc Centurian

Kawasaki G31m 100cc

Dave's personal G31m Redstreak racer

(1970)                                                    (1971)

Now yours can look like one of these too!

The 1970 Kawasaki 100cc Centurian, also known as the 'Baby Greenstreak', was for a short time the fastest 100cc bike on the race track. It was specialy built for American Scrambles tracks, coming stock with Dunlop K70 tires. These bikes were 100% competition born.

Kawasaki G31-M; AMS Racing Feature Bike built for Bill Cappel by AMS Racing.

"3 of a Kind" how many of these are still out there?

Do you own a G31-M? If so, contact us with your Frame #, Motor #, and your name.

Approx 3400 1970's and 1400 1971's were built, and none had matching #'s.

Looking For Your VIN #'s?

Left: VIN# Location on the Motor.
Right: VIN# Location on the Frame.

This is what your motor should look like when finished.

Green Tank 70 G31m
1968 Kawasaki 238 Scrambler
"My Little Red Streak"
1971 G31m
Prototype G31m Tank

Kawasaki G31m Seat Base, Cover, and Foam ( Kit )
Seat Base ( Fiberglass Top )
Kawasaki G31m Replica Seat Cover w/Correct Print and Stitch Pattern

Kawasaki G31m Complete Seat
Shows Rear Fender Support # Plate Brackets
Reproduction of the Rear Frame Loop - Complete w/Rear #Plate Mounts & 2 Seat Mounts

Kawasaki G31m Air Filter
Kawasaki G31m OEM Style Foot Peg Rubbers

Rear Airbox Sealing Ring - $60
Carb Top Cap / Air Duct Piece - $100
Airbox Coupling Rubber - $40
Airbox Set (3 Pieces)- $180
Clutch Cable Rubber @ Motor - $10

Heat Shield

Kawasaki G31m Front Pipe Mount
Kawasaki G31m Front # Plate Bracket w/Strap
Unique 1-Year Hatta Adjustable Forks, Special Backing Plate & Torque Arm 71' G31-MA

Kawasaki G31m Inner Fender Braces
Rear Under Fender # Plate Bracket
Top Rear Fender Bracket
Complete Rear Fender Mounting Kit

Kawasaki G31m Gas Valve/Petcock
Kawasaki G31m Factory Service Manual
Kawasaki G31m Factory Workshop Manual
Tank Sticker

Kawasaki G31m Set of Number Plates Laser Cut Alloy w/Dye Stamped Holes
Kawasaki G31m Close up of Front Plate
Kawasaki G31m Front Number Plate Bracket
Kawasaki G31m Front Number Plate Band
Kawasaki G31m Complete # Plate Set w/Brackets and Band

Kawasaki G31m Front Brake Cable ( Grey )
G31m Throttle Cable ( Grey )
G31m Clutch Cable ( Grey )
G31m Stock Grips
G31m Stock Levers
Kill Button ( $50 ea )

Replacement Tire: Copy of a 350x18 Dunlop K70 Tread Style; Discontinued in USA; Only 20 sets left. Give your G31-M that stock look!
Fork Wipers (NOS)

1968-70 Kawasaki F-21m 238 Greenstreak Heat Shields to Factory Specs (un-painted)

Factory Replica Kawasaki G31m Bike Stand Finished in Black Powder Coat

Steve McQueen's Bike

The ex-Steve McQueen, Von Dutch 1970 Kawasaki 100cc G31M Centurian "Ringadingdoo!". Steve McQueen's G31 sold for $55,575.00 at auction. This Kawasaki G31M Centurian is one of six given to Steve McQueen by the Japanese manufacturer to be used during the filming of the motion picture, Le Mans in France, and is typical of the new generation of lightweight trail bikes emerging at that time. The late 1960s/early 1970s saw the popularity of off-road riding increase immensely, although many found that models developed from large capacity roadsters were hard work on the dirt. The result was a rash of lightweight two-stroke trail bikes, although the G31M was actually a full-on moto-crosser that produced 18.5bhp at 10,500rpm, a staggering output for a 100cc single-cylinder machine. Combined with a dry weight of only 178lbs, this made for one exciting package and the performance available would certainly have appealed to Steve McQueen. Steve was supposed to use the Kawasaki's for running around the vast Le Mans racetrack in France, but he left this one behind at his hangar at Santa Paula airport. When he and Von Dutch returned from the filming, he told Dutch to get rid of the Kawasaki green paint and prepare the bike for use around the airport. Dutch repainted the tank in orange, striped it in gold and gave it the name "Ringadingdoo!," presumably a reference to the noise made by an un-silenced race-tuned two-stroke. Steve used the Kawasaki for trips to the coffee shop and visiting friends' hangars. In the mid-1970s Dutch moved back to California to take over the job vacated by Ed "Big Daddy" Roth at the Brucker family's "Cars of the Stars and Planes of Fame" Museum at Buena Park. When the Museum closed in 1979 Dutch was kept on as custodian of the Brucker family's private collection in Santa Paula, California where he died in 1992. The vendor first came across this Kawasaki in 1990 when he visited Dutch at the Bruckers' warehouse, where it was stored. Dutch recounted the bike's story and then signed it: "Done up for Steve McQueen by Von Dutch". The machine's history was later confirmed to the vendor by Ed Roth, Dutch's predecessor at the Bruckers', who had worked with him on the filming of "Le Mans." The only time "Ringadingdoo!" has ever been seen in public was at recent vintage cycle meet in Dixon. Cool and understated, yet packing a serious punch " it's easy to understand why Steve liked it " this lovely little bike represents an exciting opportunity to acquire a unique machine representing the great friendship and respect that Steve and Dutch had for each other. Offered without Reserve Hammer Price (inc premium) $55,575 Year 1970 Engine Number: G31E01347