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Traditional bikes can be heavy, awkward, and uncomfortable. Rumble’s low step‑through frame, fat tires, and tuned assist make every ride feel easy—whether you’re commuting or exploring trails

Size & Fit

• Reach: 19.29 in / 49 cm

• Standover Height: 41 cm

• Frame (effective) Height: 47 in / 120 cm

• Total Length: 69 in / 176 cm

• Minimum Saddle Height: 34.25 in / 87 cm

• Maximum Saddle Height: 38.58 in / 98 cm

• Rider Height: 5′1″ – 6′2″ (155–190 cm)

• Weight (with Battery): 70.32 lbs (31.9 kg)

Electrical Specifications

• Battery: 48V 18Ah

• Charger: 48V 3.0A

• Charging Time: 6–7 Hours

• Battery Lifetime: 800 Charge Cycles

• Motor: 48V 500W Brushless Rear Hub Motor, 65 Nm Torque

• Speed Class: Up to 22 mph (Level 5 PAS)

• Range: Up to 58 miles (94 km)

• Display: 3.5″ Color LCD Smart Display

• Sensor: Speed Sensor

• Throttle: Half-Twist Throttle

Mechanical Specifications

• Tires: Chaoyang 20″ × 4.0″ Puncture-Resistant Fat Tires

• Brakes: Fully Hydraulic Disc Brakes (180 mm Front + Rear)

• Crankset: 170 mm Forged 52T Dual-Sided Aluminum Alloy

• Chain: KMC Stainless Steel Chain

• Transmission: Shimano 7-Speed (TX50-R / M315)

• Derailleur: Shimano RD-TY300-D-Att, 7-Speed

• Front Suspension: Oil & Spring Suspension Fork (adjustable)

• Frame: 6061 Aluminum Alloy with Internal Battery Housing

• Gearing: Shimano 7-Speed

• Kickstand: 6061 Aluminum Kickstand

• Rims: Aluminum Alloy

• Saddle: Breathable Ergonomic Sport Cushion Seat

• Seat Post: 31.9 mm Adjustable

• Spokes: 12-Gauge Stainless Steel

Warranty & Package Contents

• Frame Warranty: 2 Years

• Parts Warranty: 1 Year

• Battery Warranty: 1 Year

• Included in the Box: Battery, Charger, Air Pump, Assembly Toolset

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