Photo: Alvaro Gaba
Valencia-based Bolt Motor Co. is one of those workshops that never fail to deliver an extraordinary custom build.
As you browse through the firm’s portfolio, you’ll be greeted by an abundance of awe-inspiring masterpieces that received the BMC treatment, many of which we’ve featured on autoevolution in the past.
Most recently, we visited their range to admire the stupefying transformation they’ve applied to a 1994 variant of Honda’s CB750 lineup. Given that it’s been a while since we brought this gem to your attention, we’ll be diving in for a quick inspection of Bolt Motor’s accomplishments on a heavily modified 1981 BMW R100RT.
The donor for this project comes to life thanks to an air-cooled 980cc boxer-twin fiend, with two valves per cylinder and a compression ratio of 9.5:1. This bad boy will go about supplying up to 70 ponies at 7,250 rpm and a peak torque output of 56 pound-feet (76 Nm) at 5,500 revs. A five-speed transmission puts the rear wheel in motion by means of a shaft final drive, leading to a top speed of 118 mph (190 kph).
BMC’s moto surgeons kicked things off in the powertrain department, where they installed high-compression pistons and a hydraulic clutch, as well as a twin-spark setup and a state-of-the-art Siebenrock Deep Sump Conversion Kit. The mill no longer inhales via Bing carbs, as they’ve been deleted in favor of higher-spec Mikuni alternatives.
On the other end of the combustion cycle, the crew fitted a custom two-into-one exhaust system, topped with a premium muffler from Spark. At the rear, the original swingarm was removed to make room for a BMW R1200S’ single-sided item, which is mated to a Hagon monoshock. Above these modules, you will find a one-off subframe that wears a carbon fiber tail, along with a neat saddle upholstered by a local craftsman.
Up front, suspension duties are handled by a pair of top-grade Ohlins forks that hail from a Ducati Panigale 1299, while ample stopping power is provided by dual 330 mm (13 inches) discs and Brembo calipers. The beast's rear wheel is brought to a stop by an R1200’s single brake rotor. After equipping a retro-style front fairing, Spain’s artists topped things off with an array of aftermarket goodies, including a Motogadget speedometer, RebelMoto switches and Tarozzi foot pegs.
Most recently, we visited their range to admire the stupefying transformation they’ve applied to a 1994 variant of Honda’s CB750 lineup. Given that it’s been a while since we brought this gem to your attention, we’ll be diving in for a quick inspection of Bolt Motor’s accomplishments on a heavily modified 1981 BMW R100RT.
The donor for this project comes to life thanks to an air-cooled 980cc boxer-twin fiend, with two valves per cylinder and a compression ratio of 9.5:1. This bad boy will go about supplying up to 70 ponies at 7,250 rpm and a peak torque output of 56 pound-feet (76 Nm) at 5,500 revs. A five-speed transmission puts the rear wheel in motion by means of a shaft final drive, leading to a top speed of 118 mph (190 kph).
BMC’s moto surgeons kicked things off in the powertrain department, where they installed high-compression pistons and a hydraulic clutch, as well as a twin-spark setup and a state-of-the-art Siebenrock Deep Sump Conversion Kit. The mill no longer inhales via Bing carbs, as they’ve been deleted in favor of higher-spec Mikuni alternatives.
On the other end of the combustion cycle, the crew fitted a custom two-into-one exhaust system, topped with a premium muffler from Spark. At the rear, the original swingarm was removed to make room for a BMW R1200S’ single-sided item, which is mated to a Hagon monoshock. Above these modules, you will find a one-off subframe that wears a carbon fiber tail, along with a neat saddle upholstered by a local craftsman.
Up front, suspension duties are handled by a pair of top-grade Ohlins forks that hail from a Ducati Panigale 1299, while ample stopping power is provided by dual 330 mm (13 inches) discs and Brembo calipers. The beast's rear wheel is brought to a stop by an R1200’s single brake rotor. After equipping a retro-style front fairing, Spain’s artists topped things off with an array of aftermarket goodies, including a Motogadget speedometer, RebelMoto switches and Tarozzi foot pegs.
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