The 2026 Harley-Davidson® Street Bob® is an FXBB model designed around a large-displacement Milwaukee-Eight® 117 Classic engine, a 6-Speed drivetrain, and a steel tubular chassis. Its technical configuration combines substantial V-twin output with modern rider-assistance technology, standard anti-lock braking capability, and a straightforward instrumentation package. The motorcycle incorporates a blend of traditional mechanical engineering and electronic rider support systems while maintaining a compact overall profile. From its engine architecture and drivetrain design to its suspension components and safety equipment, the 2026 Harley-Davidson® Street Bob® emphasizes functional performance and rider-focused operation.
Engine and Performance
The 2026 Harley-Davidson® Street Bob® is powered by the Milwaukee-Eight® 117 Classic engine, a V-twin powerplant with a displacement of 117 cubic inches, or 1,923 cc. Engine dimensions include a 4.075-inch bore and a 4.5-inch stroke, paired with a 10.3:1 compression ratio. The engine uses pushrod-operated overhead valves with hydraulic self-adjusting lifters and four valves per cylinder. This configuration supports consistent valve operation while reducing routine adjustment requirements. The engine package is complemented by a pressurized dry-sump lubrication system equipped with an oil cooler to support thermal management and lubrication performance.
Performance figures show the 2026 Harley-Davidson® Street Bob® producing 120 ft-lb of torque at 2,500 rpm and 98 horsepower, or 73 kW, at 4,600 rpm. These output characteristics demonstrate the engine’s ability to generate substantial low-rpm torque while maintaining strong power production through the operating range. Torque measurements were established using the J1349 testing method, while lean-angle figures were measured using the J1168 standard. The motorcycle achieves lean angles of 28.5 degrees to both the left and right sides.
Fuel Delivery and Induction Systems
Fuel management is handled through Electronic Sequential Port Fuel Injection (ESPFI). This system meters fuel delivery electronically and supports consistent engine operation across varying riding conditions. Air enters the engine through a 9-inch round air cleaner featuring a center-bolt cover and washable fiberglass filter media. The combination of ESPFI and the dedicated intake assembly contributes to the engine’s overall operating efficiency and responsiveness. Fuel storage is provided by a 3.5-gallon fuel tank, while a fuel-injection warning-light reserve capacity of 1 gallon helps riders monitor available fuel during operation.
Exhaust and Lubrication Design
The 2026 Harley-Davidson® Street Bob® utilizes a 2-into-1 exhaust system that incorporates a catalyst within the header assembly. This configuration consolidates exhaust flow into a single outlet path while integrating emissions-control hardware directly into the exhaust layout. The lubrication system employs a pressurized dry-sump design rather than storing oil within the crankcase.
Drivetrain and Transmission
The drivetrain of the 2026 Harley-Davidson® Street Bob® combines chain and belt drive technologies. Primary power transfer occurs through a chain-driven primary drive using a 34/46 ratio. Final power delivery to the rear wheel is managed through a belt drive with a 32/66 ratio. This arrangement forms the foundation of the motorcycle’s power-transfer system and works in conjunction with the engine’s torque characteristics. The overall design emphasizes efficient transfer of engine output while supporting the model’s 6-Speed transmission architecture.
Clutch Configuration
A mechanical 10-plate wet clutch manages engagement between the engine and transmission. The clutch uses an assist-and-conventional design that forms part of the motorcycle’s drivetrain system. Multi-plate clutch construction allows power to be distributed across multiple friction surfaces, supporting effective engagement and disengagement during operation. Integration with the 6-Speed gearbox creates a direct connection between engine output and rear-wheel power delivery. The system is engineered to operate in conjunction with the 2026 Harley-Davidson® Street Bob®’s torque-rich Milwaukee-Eight® engine.
6-Speed Cruise Drive® Transmission
Power is routed through a 6-Speed Cruise Drive® transmission. Overall gear ratios are listed as 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 define the relationship between engine speed and rear-wheel speed throughout the operating range. The stepped progression of the gearing supports controlled acceleration and sustained cruising capability. Combined with the engine’s torque characteristics, the transmission contributes significantly to the 2026 Harley-Davidson® Street Bob®’s overall riding dynamics.
Chassis and Suspension
The 2026 Harley-Davidson® Street Bob® is built around a mild-steel tubular frame featuring a rectangular-section backbone. The frame incorporates stamped, cast, and forged junctions joined through MIG-welded construction techniques. Aluminum forged fender supports are also integrated into the chassis structure. This combination of materials and manufacturing methods creates a rigid foundation for the motorcycle while supporting the engine, suspension, and rider interface components. The chassis serves as the central structural element connecting all major vehicle systems.
Swingarm Construction
The swingarm uses mild-steel tubular sections along with a stamped cross-member and forged axle junctions. Like the frame, the swingarm employs MIG-welded construction techniques. A removable belt spacer is incorporated into the assembly as part of the final-drive arrangement. This design supports rear-wheel alignment and drivetrain integration while maintaining structural integrity. The swingarm works directly with the rear suspension to manage wheel movement during operation.
Front Suspension Components
Front suspension duties are handled by a dual-bending-valve 49 mm telescopic fork. The assembly includes aluminum fork triple clamps, dual-rate springs, and gaiter covers. Suspension travel at the front measures 5 inches. The telescopic fork design supports front-wheel control and steering precision while allowing the suspension to absorb road inputs. The combination of dual-rate spring characteristics and dedicated damping hardware contributes to the motorcycle’s overall ride quality and handling behavior.
Rear Suspension Design
The rear suspension utilizes a hidden free-piston coil-over monoshock. This unit features 43 mm of stroke and incorporates cam-style preload adjustment. Rear suspension travel measures 3.4 inches. The monoshock arrangement centralizes rear suspension control while maintaining a clean chassis layout. Adjustable preload allows the suspension setup to be configured according to rider requirements and operating conditions. Together, the front and rear suspension systems create a balanced platform designed to support both comfort and handling performance.
Wheels, Tires, and Braking Systems
Wheel and tire selection plays an important role in the 2026 Harley-Davidson® Street Bob®’s overall handling characteristics. The motorcycle uses Dunlop® Harley-Davidson® Series bias blackwall tires at both ends. The front tire is specified as a D401F in size 100/90B19, while the rear tire is a D401T in size 150/80B16. These tire dimensions are paired with cast-aluminum wheel construction. Standard wheel equipment consists of black Annihilator cast-aluminum wheels, while painted aluminum tubeless laced wheels are listed as an available wheel style.
Wheel Specifications
The front wheel measures 19 inches in diameter and 2.5 inches in width. The rear wheel measures 16 inches in diameter and 3 inches in width. These dimensions establish the motorcycle’s stance and work in conjunction with the chassis geometry. Wheel sizing influences tire fitment, steering characteristics, and overall vehicle proportions.
Braking Hardware
Braking performance is supported by a 4-piston fixed front caliper and a 2-piston floating rear caliper. The system uses solid, uniform-expansion brake rotors. The front rotor diameter measures 11.8 inches with a thickness of 0.2 inches. The rear rotor measures 11.5 inches in diameter and 0.23 inches in thickness. The motorcycle utilizes a single front brake rotor rather than a dual-front-disc arrangement. These components combine to provide the braking foundation used throughout the 2026 Harley-Davidson® Street Bob® platform.
Anti-Lock Braking Technology
Anti-Lock Braking System functionality is included as standard equipment. ABS is integrated into the braking package and operates alongside the motorcycle’s broader collection of rider-assistance technologies. The system is designed to support controlled braking performance during varying riding conditions. Integration with the motorcycle’s braking hardware creates a coordinated approach to deceleration management. ABS also serves as a key component within the 2026 Harley-Davidson® Street Bob®’s overall safety equipment package.
Rider Safety Technologies
The 2026 Harley-Davidson® Street Bob® incorporates several electronic rider-assistance systems. These technologies are designed to support vehicle control and provide additional rider information. Included systems consist of Anti-Lock Braking System functionality, Traction Control System capability, Drag-Torque Slip Control System technology, and Tire Pressure Monitoring System operation. Each system contributes a specific function within the motorcycle’s broader safety strategy.
Cornering Rider Safety Enhancements
The motorcycle also includes cornering-enhanced rider safety technologies. Cornering Enhanced Anti-Lock Brake System is included as standard equipment. Cornering Enhanced Traction Control System and Cornering Drag-Torque Slip Control System are also included. These systems expand upon the motorcycle’s primary rider-assistance technologies by incorporating cornering-focused functionality. Electronic Linked Braking, Vehicle Hold Control, Wheel Lift Mitigation, and Enhanced Lift Mitigation are listed as not applicable for this model.
Tire Pressure Monitoring and Rider Information
Tire Pressure Monitoring System functionality is included and forms part of the motorcycle’s rider-information capabilities. This system is displayed through the instrument package and provides access to tire-pressure-related information. Integration with the motorcycle’s electronic systems allows critical operating information to remain accessible during use. The TPMS feature complements the 2026 Harley-Davidson® Street Bob®’s broader collection of rider-assistance technologies.
Electrical Systems and Instrumentation
The electrical system of the 2026 Harley-Davidson® Street Bob® is built around a sealed maintenance-free absorbed glass mat battery. The battery is rated at 12 volts, 17.5 Ah, and 310 cold-cranking amps at 0°F. Electrical generation is handled by a three-phase 48-amp charging system. Output is rated at 364 watts at 13 volts and 900 rpm, with maximum power output reaching 624 watts at 13 volts and 2,000 rpm. These components provide the electrical foundation necessary to support vehicle operation and onboard electronic systems.
Starting and Lighting Systems
Starting duties are handled by a 1.6 kW electric system utilizing a solenoid-shift starter motor engagement mechanism. Lighting equipment consists entirely of LED technology. The headlamp incorporates low-beam, high-beam, and signature-position-lamp functions. Rear lighting includes bullet-style LED stop, tail, and turn signals, while LED bullet turn signals are also used at the front. This consistent LED configuration provides a unified lighting package across the motorcycle.
Instrument Display and Rider Interface
Instrumentation centers around a 4-inch analog speedometer paired with a digital information display. The system provides readouts for gear position, odometer information, fuel level, ride modes, heated gear status, traction control, ABS, TPMS, cruise control, clock, trip functions, range information, and tachometer indication. The display consolidates a broad range of vehicle information into a single rider-facing interface. This arrangement allows riders to access operational data without relying on a dedicated infotainment system. The 2026 Harley-Davidson® Street Bob® does not include a factory-listed infotainment system, navigation system, Bluetooth® connectivity, phone connectivity, speakers, or related audio equipment.
USB Power Capability
A USB Type-C power outlet is included as part of the motorcycle’s electrical equipment. The outlet provides a 5-volt output at 2.4 amps. This feature supports compatible electronic-device charging through a standardized connection type. The outlet integrates with the motorcycle’s existing electrical system without requiring additional infotainment hardware. Its inclusion adds a practical utility feature while maintaining the 2026 Harley-Davidson® Street Bob®’s straightforward equipment configuration.
Dimensions, Capacity, and Comfort Characteristics
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. The wheelbase measures 64.2 inches, while the trail is specified at 6.2 inches. A 30-degree rake and 30-degree fork angle define the motorcycle’s steering geometry. These dimensions contribute to the model’s overall proportions and chassis layout.
Seat Height and Ground Clearance
Laden seat height is listed at 25.8 inches, while unladen seat height measures 26.8 inches. Static ground clearance is specified at 4.9 inches. These measurements help define the motorcycle’s rider interface and overall profile. Seat height influences rider reach and positioning, while ground clearance contributes to chassis packaging and lean-angle capability.
Weight and Fluid Capacities
The 2026 Harley-Davidson® Street Bob® has a shipping weight of 622 pounds and a running-order weight of 646 pounds. Gross Vehicle Weight Rating is listed at 1,160 pounds. Front and rear Gross Axle Weight Ratings are 450 pounds and 730 pounds, respectively. Oil capacity with filter measures 5 quarts, transmission capacity measures 1 quart, and primary chain case capacity measures 1.25 quarts.
Visit Speedway Harley-Davidson® for a Test Ride
We invite riders to experience the 2026 Harley-Davidson® Street Bob® firsthand at Speedway Harley-Davidson® in Charlotte, NC. A test ride provides an opportunity to evaluate the Milwaukee-Eight® 117 Classic engine, 6-Speed drivetrain, suspension performance, and braking characteristics in a riding environment. Our team can also demonstrate the motorcycle’s instrumentation, rider-assistance technologies, LED lighting systems, and electronic safety features. We are available to help answer questions and assist with scheduling a convenient test ride.
