The 2026 Harley-Davidson® Street Bob® is a cruiser motorcycle built around the Milwaukee-Eight® 117 Classic engine and a chassis designed to balance performance, control, and everyday usability. The model combines a large-displacement V-twin powerplant with a six-speed drivetrain, a steel frame, modern rider safety systems, and LED lighting technology. Its specifications reflect a focused approach that emphasizes engine output, mechanical simplicity, rider information, and functional equipment. From its suspension components and braking hardware to its electronic rider aids and instrumentation, every major system contributes to the motorcycle’s overall operating characteristics.
Engine and Performance
The 2026 Harley-Davidson® Street Bob® is powered by the Milwaukee-Eight® 117 Classic engine, a V-twin engine with a displacement of 117 cubic inches, or 1,923 cc. This engine uses a bore of 4.075 inches and a stroke of 4.5 inches, creating a large-displacement configuration designed to deliver substantial torque output. A compression ratio of 10.3:1 supports the engine's combustion efficiency and operating characteristics. The valvetrain features pushrod-operated overhead valves with hydraulic self-adjusting lifters and four valves per cylinder. This arrangement combines traditional Harley-Davidson® engine architecture with modern valvetrain design elements intended to maintain consistent valve operation.
Fuel Delivery and Induction System
Fuel delivery is managed through Electronic Sequential Port Fuel Injection (ESPFI). This system precisely meters fuel to support consistent engine operation across a variety of riding conditions. Air enters through a 9-inch round air cleaner equipped with a center bolt cover and washable fiberglass filter media. The washable filter design supports long-term serviceability while maintaining airflow through the intake system. Together, the fuel injection and induction components form a complete intake package designed to support the performance characteristics of the Milwaukee-Eight® 117 Classic engine.
Output and Operating Characteristics
The 2026 Harley-Davidson® Street Bob® produces a certified 120 ft-lb of torque at 2,500 rpm and a certified output of 98 horsepower, or 73 kW, at 4,600 rpm. These figures demonstrate the engine’s emphasis on strong low-rpm torque while maintaining substantial power output throughout the operating range. Engine torque is measured according to the J1349 testing method, while lean-angle measurements are conducted using the J1168 testing standard. The motorcycle is rated with a lean angle of 28.5 degrees on both the right and left sides. These performance specifications provide a measurable overview of the motorcycle’s power delivery and cornering capability.
Exhaust and Lubrication Systems
The exhaust system uses a 2-into-1 configuration with a catalyst integrated into the header. This design consolidates exhaust flow into a single outlet path while incorporating emissions-related hardware within the exhaust assembly. Engine lubrication is handled by a pressurized dry-sump system equipped with an oil cooler. The dry-sump arrangement separates oil storage from the crankcase and supports consistent lubrication throughout engine operation. The addition of an oil cooler contributes to thermal management and helps maintain appropriate operating conditions during extended use.
Drivetrain and Transmission
The drivetrain of the 2026 Harley-Davidson® Street Bob® transfers power through a combination of chain and belt-drive components. The primary drive uses a chain with a 34/46 ratio, while the final drive utilizes a belt with a 32/66 ratio. This configuration creates a direct connection between the engine and rear wheel while maintaining the mechanical characteristics specified for the model. The drivetrain is engineered to work in conjunction with the Milwaukee-Eight® 117 Classic engine and six-speed transmission.
Clutch and Gearbox
Power transfer is managed through a mechanical 10-plate wet clutch with assist and conventional operation. The clutch design supports engagement and disengagement of engine power while working within the six-speed transmission system. The motorcycle is equipped with a 6-Speed Cruise Drive® transmission, providing six forward gear ratios for a broad operating range. Overall gear ratios measure 9.311 in first gear, 6.454 in second gear, 4.793 in third gear, 3.882 in fourth gear, 3.307 in fifth gear, and 2.79 in sixth gear. These ratios establish the progression through the transmission and define how engine output is delivered to the rear wheel.
Chassis and Structural Engineering
The 2026 Harley-Davidson® Street Bob® uses a mild-steel tubular frame engineered with a rectangular-section backbone and a combination of stamped, cast, and forged junctions. The frame is assembled using MIG-welded construction and incorporates forged aluminum fender supports. This structure forms the foundation of the motorcycle and provides mounting points for the engine, suspension, and body components. The combination of tubular sections and reinforced junction areas contributes to the motorcycle’s overall structural layout. The frame design also serves as the basis for the motorcycle’s wheelbase, geometry, and handling characteristics.
Swingarm Construction
The swingarm is constructed from mild-steel tubular sections and incorporates a stamped crossmember along with forged axle junctions. Like the frame, the swingarm utilizes MIG-welded construction techniques. It also includes a removable belt spacer as part of the final-drive arrangement. The swingarm functions as the primary rear suspension mounting structure and supports rear wheel movement through the suspension travel range. Its design complements the overall chassis architecture and integrates with the hidden rear monoshock system.
Dimensions and Geometry
The 2026 Harley-Davidson® Street Bob® measures 91.3 inches in overall length, 36.4 inches in overall width, and 45.7 inches in overall height. It rides on a wheelbase of 64.2 inches and features 30 degrees of rake along with a 30-degree fork angle. Trail measures 6.2 inches, contributing to the motorcycle’s steering geometry. Static ground clearance is listed at 4.9 inches. These measurements establish the motorcycle’s physical footprint and define key geometric characteristics that influence rider positioning and vehicle dynamics.
Suspension, Wheels, and Tires
The suspension system of the 2026 Harley-Davidson® Street Bob® combines conventional front suspension architecture with a concealed rear shock arrangement. The motorcycle is designed to provide controlled wheel movement while maintaining chassis stability and rider comfort. Suspension components are integrated into the frame and swingarm structure to support handling and ride quality. Both ends of the motorcycle utilize purpose-built components that work together as a complete suspension package.
Front Suspension
The front suspension consists of a dual-bending valve 49 mm telescopic fork. The assembly includes aluminum fork triple clamps, dual-rate springs, and gaiter covers. This fork configuration provides 5 inches of front suspension travel. The use of dual-rate springs allows the fork to respond through different portions of its travel range while supporting the overall suspension design. The telescopic fork serves as the primary front suspension and steering assembly.
Rear Suspension
Rear suspension duties are handled by a hidden free-piston coil-over monoshock. The shock features a 43 mm stroke and incorporates cam-style preload adjustment. Rear suspension travel measures 3.4 inches. The concealed design contributes to the motorcycle’s overall appearance while retaining a fully functional monoshock layout. Adjustable preload allows changes to rear suspension settings within the capabilities provided by the system.
Wheels and Tire Specifications
The 2026 Harley-Davidson® Street Bob® is equipped with black Annihilator cast aluminum wheels. The front wheel measures 19 inches in diameter and 2.5 inches in width, while the rear wheel measures 16 inches in diameter and 3 inches in width. Tire specifications include a Dunlop® Harley-Davidson® Series D401F front tire sized 100/90B19 57H BW and a Dunlop® Harley-Davidson® Series D401T rear tire sized 150/80B16 77H BW. Both tires are bias blackwall designs intended for use with the motorcycle’s wheel and suspension package. The wheel and tire combination contributes to the overall chassis configuration and supports the motorcycle’s handling characteristics.
Braking Systems and Rider Safety Technology
The braking system on the 2026 Harley-Davidson® Street Bob® combines mechanical braking hardware with electronic rider-support technologies. This integrated approach provides braking functionality alongside systems designed to assist with traction and vehicle control. The motorcycle includes several standard safety technologies that monitor and support operation under various riding conditions. These systems are incorporated into the model as standard equipment.
Brake Components
The front brake uses a fixed four-piston caliper, while the rear brake utilizes a floating two-piston caliper. Both brakes operate with solid uniform-expansion rotors. The front rotor measures 11.8 inches in diameter and 0.2 inches in thickness. The rear rotor measures 11.5 inches in diameter and 0.23 inches in thickness. The front braking system uses a single rotor configuration rather than a dual-front-disc arrangement. Together, these components make up the motorcycle’s primary braking hardware.
Standard Rider Safety Systems
Anti-lock Braking System (ABS) is included as standard equipment. The motorcycle also includes a Traction Control System (TCS), Drag-Torque Slip Control System (DSCS), and Tire Pressure Monitoring System (TPMS). These technologies contribute to braking management, traction monitoring, and tire-pressure awareness. The inclusion of multiple electronic rider-support systems reflects the integration of safety-focused technology into the 2026 Harley-Davidson® Street Bob® platform. Each system performs a specific function while operating as part of the motorcycle’s overall control architecture.
Cornering Rider Safety Enhancements
The 2026 Harley-Davidson® Street Bob® also includes a Cornering Enhanced Anti-lock Brake System (C-ABS), Cornering Enhanced Traction Control System (C-TCS), and Cornering Drag-Torque Slip Control System (C-DSCS). These systems expand upon the motorcycle’s standard rider-support technology package. Cornering-related functionality is incorporated into braking and traction-control operations through these included systems. Electronic Linked Braking, Cornering Enhanced Electronic Linked Braking, Vehicle Hold Control, Wheel Lift Mitigation, and Enhanced Lift Mitigation are not listed as included equipment. The resulting safety package focuses on ABS, traction management, drag-torque management, tire-pressure monitoring, and cornering-enhanced support systems.
Electrical Equipment and Rider Information
The electrical system on the 2026 Harley-Davidson® Street Bob® supports starting, charging, lighting, instrumentation, and accessory power functions. The system combines modern electrical components with a straightforward rider interface. Its design emphasizes operational information, lighting visibility, and electrical reliability. Multiple systems work together to provide the rider with access to key vehicle data and essential electrical functions.
Battery, Charging, and Starting Systems
Electrical power is supplied by a sealed, maintenance-free absorbed glass mat battery rated at 12 volts, 17.5 amp-hours, and 310 cold-cranking amps at 0°F. Charging is handled by a three-phase 48-amp system capable of producing 364 watts at 13 volts and 900 rpm, with a maximum output of 624 watts at 13 volts and 2,000 rpm. Engine starting is provided by a 1.6 kW electric starter with solenoid-shift starter motor engagement. These components form the foundation of the motorcycle’s electrical infrastructure. Together, they support vehicle operation, lighting, instrumentation, and accessory functions.
LED Lighting Systems
The 2026 Harley-Davidson® Street Bob® uses an all-LED lighting package. The headlamp incorporates low-beam, high-beam, and signature-position lamp functions. Tail, stop, and turn signal functions are integrated into bullet-style LED assemblies. Front and rear turn signals also utilize LED bullet-style units. This lighting configuration provides a unified approach across the motorcycle’s exterior lighting equipment.
Instrumentation and Rider Interface
A 4-inch analog speedometer serves as the primary instrument display and incorporates multiple digital information functions. The system displays gear position, odometer, fuel level, ride modes, heated gear status, traction control, ABS, TPMS, cruise control, clock, trip information, range, and tachometer indication. This arrangement centralizes a broad range of vehicle information within a compact instrument cluster. Riders can access operational data through a single display location without requiring a separate infotainment screen. The system focuses on vehicle information and rider awareness rather than multimedia functionality.
Connectivity and Utility Features
The motorcycle includes a USB C-Type power outlet with an output of 5 volts at 2.4 amps. This outlet provides a dedicated source of power for compatible devices. Auxiliary lamps, GPS functionality, and reverse operation are listed as not applicable. The 2026 Harley-Davidson® Street Bob® also does not include a traditional infotainment system, speakers, Bluetooth® connectivity, navigation functions, mobile phone integration, or rider-intercom equipment. This equipment configuration places emphasis on essential rider information and utility functions.
Comfort and Everyday Functionality
The 2026 Harley-Davidson® Street Bob® incorporates several specifications that influence rider ergonomics and daily usability. A laden seat height of 25.8 inches and an unladen seat height of 26.8 inches establish the rider seating position. The motorcycle carries 3.5 gallons of fuel and includes a fuel-injection warning-light reserve capacity of 1 gallon. Oil capacity with filter is 5 quarts, transmission capacity is 1 quart, and primary chain case capacity is 1.25 quarts. Running-order weight is listed at 646 pounds, while gross vehicle weight rating is 1,160 pounds. These specifications help define the motorcycle’s operational characteristics, maintenance capacities, and overall rider interface.
Visit Tampa Bay Harley-Davidson® for a Test Ride
We invite you to experience the 2026 Harley-Davidson® Street Bob® firsthand at Tampa Bay Harley-Davidson® near Brandon, FL. Our team can help you explore the Milwaukee-Eight® 117 Classic engine, six-speed drivetrain, rider safety technologies, LED lighting system, and integrated instrumentation. A test ride provides an opportunity to evaluate the motorcycle’s handling characteristics, braking performance, suspension response, comfort-oriented dimensions, and rider interface. You can also gain a better understanding of how the traction control, ABS, TPMS, and cornering-enhanced safety systems function as part of the overall package. Contact our team to schedule a test ride and learn more about the technical features and equipment that define the 2026 Harley-Davidson® Street Bob®.
