Shimano Nexus Rear Bicycle Hub Kit with Roller Brake

Product Description

Shimano Nexus 3-Speed ​​SG-3R40 + BR-IM31 Rear Roller Brake Set 36H No. 8087+8090 36C. A complete Shimano Nexus drivetrain and brake set for city and trekking bikes. The set includes a 3-speed hub and a roller brake, creating a durable, maintenance-free, and reliable solution for everyday riding. The Nexus system is a proven design, valued for its simple operation, weather resistance, and long lifespan. The roller brake provides smooth and predictable braking regardless of the weather, while the 3-speed hub enables convenient, low-maintenance gear shifting. It's the perfect choice for city, trekking, and utility bikes. The set is fully compatible and ready to install. Basic hub features: Highest operating smoothness and ease of use. Trouble-free and maintenance-free operation. The hub is resistant to changing weather conditions. Ideal for city and touring bikes with 26- or 28-inch wheels (36 spokes). Gear ratios can be changed both while riding and when stationary. Hub specifications: Brand: Shimano. Shimano group: Nexus 3. Shimano model code: SG-3R40. Hub type: multi-speed. Gear ratios: 3. Compatible with roller brakes. Spoke holes: 36. Axle length: 177 mm. Hub flange diameter: 84 mm. Maximum load: 80-140 kg. Curb weight: 885 g. Body: steel. Color: silver. Packaging: production. Specifications Roller brake: Model: Shimano Nexus BR‑IM31‑R (rear roller brake for Nexus Inter‑M hubs) Compatibility: with Nexus SG‑3R40 and SG‑4R31 hubs Type: Roller Brake (drum brake) mounted to the inner hub Material: steel drum + aluminum fasteners with reaction arm Cooling clamp diameter: approx. 90 mm; surface = 124.5 mm Weight: approx. 500 g (with mounting elements) Set includes: BR‑IM31‑R brake, screw Production packaging