BIKE OF THE MONTH


March 2025 Bike of the Month
Bike of the Month Bob & Chet Primmer of Corona Del Mar with their 1936 Velocette KSS 500cc Custom

Make: Velocette
Model: KSS
Year: 1936
Country of Origin: England
Engine: 500cc Single
Transmission: 4 Speed
Owner: Bob Primmer
City: Corona Del Mar


1936 Velocette KSS 500cc Custom

Congratulations to Bob Primmer of Corona Del Mar for winning Bike of the Month with his 1936 Velocette KSS 500cc Custom. Bob won a plaque provided by Russ Brown Motorcycle Attorneys.

Bob has owned the Velocette since January.

Per Bob & Chet:
1936 Velocette KSS 500cc Custom
  • The KSS was Velocette's Super Sports model
  • 480cc air-cooled OHC single-cylinder engine -- modified 348cc engine with a longer stroke, spacer under cylinder barrel
  • Amal carburetor
  • BTH magneto ignition
  • 4-speed manual gearbox, right side foot shift
  • Brooklands-style polished silencer with drilled fishtail tip
  • Webb girder front fork, rigid rear frame
  • 7-inch single-leading shoe front and rear brakes
The KSS is renowned as a machine of quality and terrific performance that was hand-built in a small family factory firm in Birmingham, England, and proved to be a giant-killer in racing.

The KSS model dates back to 1925, when Veloce Ltd. stunned the world with its new overhead-camshaft sports machine dubbed the Model K. The Model K was soon racing and winning everything it entered, as factory-tuned examples exceeded 100 MPH and handled peerlessly, winning the Isle of Man Junior TT from 1927-29.

Those winning machines were hardly different from production roadsters, and anyone could tune their K for high performance with an open pipe, a hot cam, and a high-compression piston—all available from the factory as tuning spares.

This 1936 Velocette KSS is a Hot Rod motorcycle that was purchased from the Urban S. Hirsch III Collection in Beverly Hills, CA.

The engine capacity has been bumped from the stock 349cc to 480cc by lengthening the stroke, as implied by the longer, custom aluminum cylinder barrel, which was a rare but known modification in the 1940s and ‘50s.

They have won Bike of the Month three times in the past.
Past Winnings:
January 2025 1954 Simplex Servi-Cycle
September 2024 1938 Zundapp K800
August 2024 1941 BWW R12

Thank you, Bob for bringing your Velocette out for all of us to see. See all the photos in our March 2025 Gallery.

The Bike of the Month contest is held monthly at the Vintage Bike OC meet. Qualifying motorcycles must be 30 years old or older. Former Bike of the Month winning bikes are not eligible to win again. Anyone attending the meet is eligible to enter a qualifying bike in the contest and vote for their favorite bike. The winning bike is chosen by a popular vote and is featured on the Home page for one month and in this feature article. The Bike of the Month articles are permanent content on the site.

Bike of the Month Gallery
Photo gallery of all the Bike of the Month winners.
previous Archive next
March 2025
1936 Velocette KSS 500cc Custom
February 2025
1971 Yamaha JT-1 Mini Enduro
January 2025
1954 Simplex Servi-Cycle
December 2024
1967 BMW R69S
November 2024
1972 Norton Combat Commando 750
October 2024
1985 Ducati Mille
September 2024
1938 Zundapp K800
August 2024
1941 BWW R12
July 2024
1947 Indian Chief
June 2024
1958 Cushman
May 2024
1979 Honda CB-X
April 2024
1972 Rickman Yamaha IT 200
March 2024
1970 Honda US90 Trike
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