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The Sivrock is a full-size fat-tire e-mountain bike built around a 1000W geared hub motor, a 48V 15Ah integrated battery and 26 x 4.0 tires on a 6061 aluminum frame. It claims 85Nm of torque, a 25+ mph top speed and a 35-degree climbing limit, with Shimano 7-speed gearing and mechanical disc brakes front and rear. It suits heavier riders and off-road commuters who want snow, sand and trail capability without a mid-drive price. Against big-name fat e-bikes it offers more motor and battery on paper, but it is a hub-drive with a front-only suspension fork and no name-brand dealer network.
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Lowest price we've seen: $1,230.22 on Nov 9 at appravo.com. Tracked across 1 store since Nov 9.
Owner feedback on this class of budget fat-tire hub-drive e-bike is mixed: riders like the power and the price-to-spec ratio, but report real-world range well under the claimed 75 miles and note the weight.
Enjoy powerful performance and explore without limits with the expertly engineered Sivrock Fat Tire Electric Bike. Designed for adults who crave adventure, whether it's navigating challenging trails, conquering off-road terrains, or enjoying a powerful urban commute, this e-bike is built to perform. With robust UL and GCC certifications, it assures superior safety, exceptional durability, and long-lasting value, all integrated into a sleek, rugged design ready for anything you throw at it.Experience the thrill of a 1000W high-speed brushless motor, delivering a top speed of 25+ mph and an impressive 85Nm of torque to effortlessly ascend slopes up to 35°. Paired with a long-lasting 48V 15Ah waterproof lithium battery, you can ride up to 75 miles on a single charge in pedal-assist mode. The responsive Shimano 7-speed transmission system and 26” x 4.0” puncture-resistant fat tires ensure smooth transitions and superior grip across snow, sand, dirt, and rocky paths, making every journey an unforgettable adventure.Product Specifications Brand: Sivrock Bike Type: Electric Mountain Bike, All-Terrain Motor: 1000W High-Speed Brushless Gear Hub Motor Max Torque: 85Nm Top Speed: 25+ mph (40 km/h) Max Climbing Angle: 35° Battery: 48V 15Ah Integrated Waterproof Lithium-Ion (IP54 rated) Charging Time: 8-9 hours Range: Pure Electric Mode: 25+ miles (40+ km) Pedal Assist Mode (PAS): Up to 75 miles (120 km) Frame Material: High-Density Aluminum Alloy Payload Capacity: Up to 330 lbs (150 kg) Tires: 26" x 4.0" Puncture-Resistant, Anti-Skid Fat Tires Gears: Shimano 7-Speed Transmission System Brakes: Mechanical Disc Brakes (Front & Rear) Suspension: Hydraulic Front Suspension Fork with Lockout and Preload Adjustment Display: Large Multi-Function LCD (Speed, Assist Level, Battery Status, Mileage, Riding Time) Riding Modes: 4 Modes (Pure Electric, Pedal Assist, Cart Mode, Classic Bicycle Mode) Headlight: High-Luminance LED Headlight Certifications: UL, GCC Assembly: 85% Pre-assembled Wheel Material: Alloy Steel Seat Material: Leather USB Charging Port: Yes Warranty: 1-year warranty on battery, motor, and controller Technical Support: Lifetime Technical Support from SivrockWhat's Included in the Box 1x Sivrock Electric Fat Tire Mountain Bike (85% pre-assembled) 1x 48V 15Ah Lithium-Ion Battery (integrated) 1x Battery Charger 1x Tool Kit for assembly 1x User ManualCare and Maintenance Guidelines Battery Charging: Always use the provided charger. Do not overcharge; unplug once fully charged (8-9 hours). Store the battery in a cool, dry place when not in use and charge regularly even if not riding to maintain battery health. Cleaning: Wipe the bike frame with a damp cloth. Avoid direct high-pressure water spray on electrical components (motor, battery, display) to prevent damage. Tire Pressure: Regularly check and maintain tire pressure according to the recommended PSI on the tire sidewall for optimal performance and safety. Brake Inspection: Periodically check brake pads and cables for wear and proper function. Adjust or replace as needed to ensure reliable stopping power. General Inspection: Before each ride, check that all bolts and quick releases are tightened, and the suspension is functioning correctly. Lubricate the chain regularly.
