Compact, powerful 1261cc DOHC 90-degree V-4 engine with an oversquare bore and stroke of 78mm x 66mm, and longitudinal engine mounting improves power flow and drivetrain efficiency.
The ST1300's low center of gravity contributes to enhanced low-speed handling. The 360-degree crank contributes to a very broad powerband. Two engine counterbalancers virtually eliminate primary and secondary vibration. Both gear-driven counterbalancer shafts are installed in the lower crankcase to the left side of the crankshaft. The first shaft is driven directly by the crankshaft at a 2:1 ratio. The second shaft is positioned below the first and is driven in the opposite direction by the first balancer shaft's drive gear. The combination of these two balancers ensures a supremely comfortable ride for long-distance touring. Direct shim-under-bucket valve actuation system ensures high-rpm durability and allows 16,000-mile valve-maintenance intervals. Programmed Fuel Injection (PGM-FI) (see Technology Section).
Electronic Control Unit (ECU) closed-loop emissions system utilizes two oxygen sensors to constantly deliver a precise air/fuel mixture, while two exhaust catalyzers further reduce emissions. 4-into-2 stainless-steel exhaust system features a pair of attractive, triangular-section 5.4-liter mufflers with stainless-steel heat shields.
High-output, air-cooled, 660-watt alternator is located between the cylinder banks, contributing to a shorter and more compact engine design. U-shaped aluminum radiator has excellent cooling capacity, and a ring-type fan draws air through the radiator at low speeds to ensure stable operating temperatures for consistent performance and long engine life.
The ST1300's low center of gravity contributes to enhanced low-speed handling. The 360-degree crank contributes to a very broad powerband. Two engine counterbalancers virtually eliminate primary and secondary vibration. Both gear-driven counterbalancer shafts are installed in the lower crankcase to the left side of the crankshaft. The first shaft is driven directly by the crankshaft at a 2:1 ratio. The second shaft is positioned below the first and is driven in the opposite direction by the first balancer shaft's drive gear. The combination of these two balancers ensures a supremely comfortable ride for long-distance touring. Direct shim-under-bucket valve actuation system ensures high-rpm durability and allows 16,000-mile valve-maintenance intervals. Programmed Fuel Injection (PGM-FI) (see Technology Section).
Electronic Control Unit (ECU) closed-loop emissions system utilizes two oxygen sensors to constantly deliver a precise air/fuel mixture, while two exhaust catalyzers further reduce emissions. 4-into-2 stainless-steel exhaust system features a pair of attractive, triangular-section 5.4-liter mufflers with stainless-steel heat shields.
High-output, air-cooled, 660-watt alternator is located between the cylinder banks, contributing to a shorter and more compact engine design. U-shaped aluminum radiator has excellent cooling capacity, and a ring-type fan draws air through the radiator at low speeds to ensure stable operating temperatures for consistent performance and long engine life.
Quiet and reliable shaft-drive system is virtually maintenance-free
Valve Train: DOHC; four valves per cylinder
Induction: PGM-FI with automatic enricher circuit, four 36mm throttle bodies, eight holes per injector
Ignition: Computer-controlled digital with 3-D mapping and electronic advance
Transmission: Five-speed
Final Drive: Shaft
Suspension Front: 45mm HMAS cartridge fork; 4.6 inches travel
Rear: HMAS gas-charged single shock with spring preload adjustability; 4.8 inches travel
Brakes Front: Dual full-floating 310mm discs with CBS three-piston calipers
Rear: Single 316mm disc with CBS three-piston caliper; Optional ABS
Tires Front: 120/70ZR-18
Rear: 170/60ZR-17
Wheelbase: 58.7 inches
Rake (Caster Angle): 26.0o
Trail: 98mm (3.9 inches)
Seat Height: 31.1 inches (+/- 0.6 inch)
Fuel Capacity: 7.7 gallons
Colors: Candy Dark Red
Curb Weight*: 719 pounds (ST1300) / 730 pounds (ST1300 ABS)
Induction: PGM-FI with automatic enricher circuit, four 36mm throttle bodies, eight holes per injector
Ignition: Computer-controlled digital with 3-D mapping and electronic advance
Transmission: Five-speed
Final Drive: Shaft
Suspension Front: 45mm HMAS cartridge fork; 4.6 inches travel
Rear: HMAS gas-charged single shock with spring preload adjustability; 4.8 inches travel
Brakes Front: Dual full-floating 310mm discs with CBS three-piston calipers
Rear: Single 316mm disc with CBS three-piston caliper; Optional ABS
Tires Front: 120/70ZR-18
Rear: 170/60ZR-17
Wheelbase: 58.7 inches
Rake (Caster Angle): 26.0o
Trail: 98mm (3.9 inches)
Seat Height: 31.1 inches (+/- 0.6 inch)
Fuel Capacity: 7.7 gallons
Colors: Candy Dark Red
Curb Weight*: 719 pounds (ST1300) / 730 pounds (ST1300 ABS)
