The 2026 Harley-Davidson® Street Bob® is configured as a Softail® platform motorcycle with a direct emphasis on mechanical performance, structural efficiency, and rider-assist technology. The model uses a Milwaukee-Eight® 117 Classic engine, a 6-speed Cruise Drive® transmission, and a belt-driven final drive system. The overall dimensions measure 91.3 inches in length, 36.4 inches in width, and 45.7 inches in height. The wheelbase is set at 64.2 inches, with a rake angle of 30 degrees and a trail of 6.2 inches. Laden seat height is measured at 25.8 inches, while unladen seat height is 26.8 inches. Static ground clearance is rated at 4.9 inches. The motorcycle has a running order weight of 646 pounds, which supports a stable platform for consistent handling.
Engine Configuration and Output Specifications
The 2026 Harley-Davidson® Street Bob® uses the Milwaukee-Eight® 117 Classic V-twin engine with a displacement of 117 cubic inches or 1,923 cubic centimeters. The bore measures 4.075 inches, and the stroke measures 4.5 inches, resulting in a compression ratio of 10.3:1. The engine uses pushrod-operated overhead valves with hydraulic self-adjusting lifters and four valves per cylinder. This configuration supports consistent valve timing and reduced maintenance requirements for valve adjustment.
Fuel delivery is managed through Electronic Sequential Port Fuel Injection. The intake system includes a 9-inch round air cleaner with a center bolt cover and washable fiberglass filter media. The exhaust system is a 2-into-1 configuration with a catalyst integrated into the header. Lubrication is handled by a pressurized dry-sump system with an oil cooler, which assists with thermal stability and consistent lubrication under varying operating conditions.
The engine produces 120 foot-pounds of torque at 2,500 revolutions per minute. Power output is rated at 98 horsepower at 4,600 revolutions per minute. These figures indicate a performance profile that emphasizes low-to-mid-range torque delivery, which supports acceleration from low engine speeds and stable power distribution across typical riding ranges.
Transmission and Drivetrain Engineering
The drivetrain system integrates a 6-speed Cruise Drive® transmission. The primary drive uses a chain with a 34/46 ratio. The final drive uses a belt system with a 32/66 ratio. The clutch is a mechanical 10-plate wet design with assist and conventional operation, which supports smoother engagement and reduced lever effort.
The overall gear ratios are configured to provide progressive torque transfer across all six gears. First gear is set at 9.311, second gear at 6.454, third gear at 4.793, fourth gear at 3.882, fifth gear at 3.307, and sixth gear at 2.79. This arrangement allows for controlled acceleration in lower gears and reduced engine speed in higher gears during sustained travel. The belt-driven final drive contributes to reduced maintenance requirements compared to chain-driven systems and provides consistent power delivery to the rear wheel.
Structural Geometry and Dimensional Engineering
The frame uses a mild steel tubular construction with a rectangular-section backbone. It incorporates stamped, cast, and forged junctions with MIG welding techniques. Aluminum forged fender supports are integrated into the structure to reduce weight in non-load-critical areas. The swingarm also uses mild steel tubular sections with a stamped cross-member and forged axle junctions. A removable belt spacer is included for service access and alignment adjustments.
The geometry of the motorcycle is defined by a 30-degree rake and a 6.2-inch trail measurement. These parameters influence steering stability and directional control. The 64.2-inch wheelbase contributes to straight-line stability and balanced weight distribution. Combined with the low seat height, the configuration supports rider accessibility and stable positioning during stops and low-speed maneuvers.
Fuel capacity is rated at 3.5 gallons, with a reserve fuel warning capacity of 1 gallon. Oil capacity with filter is 5 quarts, transmission capacity is 1 quart, and the primary chain case holds 1.25 quarts. These capacities are aligned with the engine’s cooling and lubrication requirements and support consistent operation over extended riding periods.
Suspension System and Ride Control Components
The front suspension uses a 49 millimeter telescopic fork with dual-bending valve technology. The fork includes aluminum triple clamps, dual-rate springs, and gaiter covers. Suspension travel at the front is measured at 5 inches. This configuration is designed to absorb road irregularities while maintaining front-end stability.
The rear suspension uses a hidden coil-over monoshock with a free piston design. It provides 43 millimeters of stroke and includes a cam-style preload adjustment system. Rear suspension travel is rated at 3.4 inches. The hidden monoshock design maintains the visual appearance of a rigid frame while providing functional suspension movement.
Together, the front and rear suspension systems support consistent contact between the tires and the road surface. The preload adjustment allows the rider to modify suspension characteristics based on load conditions, which can affect ride height and handling response.
Wheel Construction, Tire Fitment, and Braking System
The 2026 Harley-Davidson® Street Bob® uses black Annihilator cast aluminum wheels as standard equipment. 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. An optional painted aluminum tubeless laced wheel configuration is available in certain markets.
Tire specifications include a Dunlop® Harley-Davidson® Series D401F front tire sized at 100/90B19 57H BW and a D401T rear tire sized at 150/80B16 77H BW. These bias-ply tires are designed to provide consistent traction and durability under varying road conditions.
The braking system uses a 4-piston fixed caliper at the front and a 2-piston floating caliper at the rear. Rotor design is solid with uniform expansion characteristics. The front rotor has a diameter of 11.8 inches and a thickness of 0.2 inches. The rear rotor has a diameter of 11.5 inches and a thickness of 0.23 inches. The front braking system is not dual-disc, which simplifies the front-end configuration while maintaining adequate braking performance through caliper design and rotor sizing.
An Anti-lock Braking System is included as standard equipment. This system helps prevent wheel lockup during braking and supports controlled deceleration on varying surfaces.
Electrical System and Instrumentation Interface
The electrical system uses a sealed, maintenance-free absorbed glass mat battery rated at 12 volts, 17.5 amp-hours, and 310 cold cranking amps at 0 degrees Fahrenheit. Charging is managed by a three-phase 48-amp system. Output is rated at 364 watts at 13 volts and 900 revolutions per minute, with a maximum output of 624 watts at 13 volts and 2,000 revolutions per minute.
Starting is handled by a 1.6-kilowatt electric starter with solenoid shift engagement. This configuration provides a consistent engine starting under standard operating conditions.
The lighting system is fully LED. The headlamp includes a low beam, a high beam, and a signature position lamp. The tail, stop, and turn signals use bullet-style LED units. LED lighting improves energy efficiency and increases visibility compared to traditional halogen systems.
Instrumentation is centered around a 4-inch analog speedometer combined with a digital display. The display provides gear position, odometer readings, fuel level, ride modes, heated gear indicators, traction control status, ABS status, tire pressure monitoring data, cruise control status, clock, trip information, range estimation, and tachometer readings. This interface provides essential operational data without reliance on a full infotainment system.
A USB-C power outlet is included, delivering 5 volts at 2.4 amps. This allows for device charging during operation.
Rider Safety Enhancements and Control Systems
The 2026 Harley-Davidson® Street Bob® includes a set of rider safety systems designed to support traction and braking control. Anti-lock Braking System is standard. The Traction Control System is included to regulate rear wheel slip during acceleration. Drag-torque Slip Control System is also included, which helps manage rear wheel behavior during aggressive downshifting.
The Tire Pressure Monitoring System provides real-time tire pressure data to the rider through the instrument display. This assists with maintaining proper tire inflation, which is critical for handling and braking performance.
Cornering-enhanced safety systems are also integrated. Cornering Enhanced Anti-lock Braking System adjusts braking force based on lean angle. Cornering Enhanced Traction Control System modifies the traction control response when the motorcycle is leaned into a turn. The Cornering Drag-torque Slip Control System operates in a similar manner, adjusting its function based on lean angle conditions.
Electronic Linked Braking, Vehicle Hold Control, and Wheel Lift Mitigation are not included on this model. This configuration maintains a balance between mechanical control and electronic assistance.
Fuel Efficiency and Operational Range
The 2026 Harley-Davidson® Street Bob® has an estimated fuel economy rating of 47 miles per gallon based on combined city and highway testing methods. With a 3.5-gallon fuel tank, this supports a practical riding range before refueling is required. The reserve fuel capacity warning is triggered at approximately 1 gallon remaining, allowing the rider to monitor fuel levels and plan refueling intervals accordingly.
The dry-sump lubrication system with oil cooler contributes to consistent engine temperature control, which supports fuel efficiency and long-term engine performance. Fluid capacities are configured to maintain proper lubrication across the engine, transmission, and primary drive systems.
Schedule a Test Ride at Harley-Davidson® of Wesley Chapel
We invite you to evaluate the 2026 Harley-Davidson® Street Bob® by scheduling a test ride at Harley-Davidson® of Wesley Chapel near Zephyrhills, FL. This model integrates a Milwaukee-Eight® 117 Classic engine, a 6-speed transmission, and a belt-driven final drive that delivers consistent torque transfer. The suspension system, braking components, and rider safety enhancements work together to support controlled handling and braking performance. The instrumentation interface and electrical system provide essential data and functionality without unnecessary complexity. A test ride allows direct observation of how these technical specifications operate together under normal riding conditions.
