Established in 1992, Sumai Bicycle Co.,Ltd. is one of the biggest China suspension bike manufacturer and wholesaler. We've gotten the WMI (World Manufacturer Identification) since 2005. Our company has perfect quality management systems with ISO9001 international quality authentication in 2002 and pays great attention to new product development. We have high-quality staff at design, oem suspension mountain bike development and production fields, and have introduced in qualified personnel from foreign bicycle enterprise. Most of our products have been approved with CE certificate, and some approved with EEC, EPA and CARB.

21-speed mountain bike features a full-suspension, strong aluminum frame
Floating beam suspension design is mated to a Zoom suspension fork with elastomer/spring technology
Microshift push shifters and Shimano TZ-30GS derailleur
Strong aluminum wheelset featuring V-shape rim profile and high-flange alloy hubs
Front and rear Promax disk brakes work great, even in adverse conditions
The GMC Topkick 21-Speed Mountain Bike features a full-suspension, strong aluminum frame that utilizes a floating beam suspension design that is mated to a Zoom suspension fork with elastomer/spring technology. The Topkick's drivetrain starts with Microshift push shifters. These shifters control Shimano's tried and true TZ-30GS derailleur. The drivetrain finishes up with a strong aluminum wheelset featuring V-shape rim profile and high-flange alloy hubs. Stopping is handled by Promax disk brakes on the front and rear. These brakes are vastly superior to rim brakes, especially under adverse road conditions. True to it's GMC roots, this bicycle is rugged, good looking, and built for the long haul.

Dual-suspension mountain bike for smooth trail riding
Front and rear suspension system absorbs harsh bumps
Responsive 21-speed Shimano shifters and SRAM drive train
Hand-operated front and rear V-brakes for extreme braking
Lightweight yet durable alloy frame; 3-piece alloy crank set
Hit the trail in confidence with the Mongoose Metric 24-inch dual-suspension mountain bike. The Metric is equipped with a lightweight, responsive alloy dual- suspension frame that works to give you a smoother overall ride by absorbing harsh bumps. Riders will also dig the 21-speed Shimano shift system and SRAM drive train, which seamlessly switch gears on straightaways or hills. Other details include hand- operated front and rear V-brakes for extreme braking power, a suspension fork that helps improve your bike's handling, and an alloy three-piece crank set.

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