Classic and Classy Motorcycles Ltd

Historical Context

The 1968 Triumph T100R Daytona 500cc was the performance version of Triumph’s respected 500 twin lineup. Named after Triumph’s successes at the Daytona 200 in the early 1960s, the T100R was designed as a road-going sports machine with racing pedigree. Unlike the single-carb T100C or T100S, the T100R featured twin Amal Monobloc carburetors and a higher compression engine for more spirited performance. By 1968, Triumph’s 500cc range was known for its light weight, nimble handling, and refined engineering—making it a serious contender against larger-capacity rivals both on the road and in club-level racing.

Technical Specifications and Performance

• Year: 1968
• Make: Triumph
• Model: T100R Daytona
• Engine Displacement: 490cc
• Engine Type: Air-cooled OHV parallel twin
• Compression Ratio: 9.5:1
• Carburetion: Twin Amal Monobloc carburetors
• Ignition System: Lucas points ignition
• Transmission Type: 4-speed manual
• Final Drive: Chain
• Cooling System: Air-cooled
• Fuel Capacity: Approx. 2.5 gallons
• Braking System: Drum front and rear
• Dry Weight: Approx. 360 lbs
• Top Speed: Around 105 mph

Technical Advancements

The T100R was Triumph’s answer to lightweight sports bike demands of the 1960s. The twin-carb setup provided better airflow and increased power output compared to the single-carb Tigers. Combined with higher compression pistons and performance cams, the T100R made the most of its 500cc capacity. It also featured a close-ratio gearbox and a slim, lightweight frame with sharp steering geometry. This made it an agile and quick machine, capable of outperforming many larger-capacity bikes in twisty or technical riding conditions.

Evolution of the Model

First launched in the mid-1960s, the T100R was the final and most developed form of Triumph’s 500cc sporting twin. It retained the traditional pre-OIF (oil-in-frame) chassis and the earlier aesthetic with slim fenders and classic lines. The 1968 model benefited from incremental improvements in metallurgy, carburation, and build quality, and is considered one of the best years for this model. Though eventually overshadowed by the 650cc Bonnevilles and 750s of the 1970s, the Daytona remained a favourite in vintage racing circles.

Competitors in the Market

In 1968, the Daytona faced competition from the Honda CB450, Norton 500SS, and smaller capacity two-strokes from Suzuki and Yamaha. While the Japanese bikes offered electric start and smoother engines, the Triumph delivered superior torque, better handling, and a more connected, mechanical riding experience. The Daytona was also easier to work on, and many were used in club racing, scrambling, and everyday riding across the UK and U.S.

Legacy and Appeal

As a barn find or restoration project, the 1968 Triumph T100R Daytona holds serious appeal. Its twin-carb setup, racing roots, and light chassis make it one of the most entertaining vintage Triumphs to ride. With good parts availability and a strong enthusiast network, the T100R is an achievable and rewarding classic to restore. Once brought back to life, it offers a lively ride, unmistakable British styling, and the satisfaction of owning one of Triumph’s most capable 500s of the era.