Established in 1992, Sumai Bicycle Co.,Ltd. is one of the biggest China kona bicycle 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 kona bicycles 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.

If this is going to be your first Kona bicycle, we’d like to warn you...it won’t be your last.
Frame tubing Kona 7005 Aluminum Butted
Fork Suntour XCC-D 63mm
Headset Ritchey LB-Plus
Crankarms Suntour CW-XCC-T102
Chainrings 42/34/24
B/B CH
Pedals Xerama SP-941S
Chain KMC Z-72
Freewheel Shimano HG30 (11-32, 8spd)
F/D Shimano Tourney
R/D Shimano Altus
Shifters Shimano EZ-Fire Integrated
Handlebar Kona Riser
Stem Kona Control
Grips Kona Mooseknuckle
Brakes Tektro M530
Brake Levers Shimano EZ-Fire Integrated
Front hub Formula
Rear hub Formula
Spokes Stainless 14g
Tires Kenda K-922 26 x 1.95
Rims Rigida Cyber 10
Saddle WTB Speed V Sport SE
Seatpost Kona Thumb
Seat clamp Kona QR
Color Blue/White/Black

Frame: Kona 7005 Aluminium Butted Fork: Kona Project Two Disc Gears: Shimano Deore rear derailleur and Shimano 105 front Shifters: Shimano SLR-440-9 Chainset: Truvativ Elita GXP with 30 42 and 52 tooth chainrings Brakes: Hayes Sole disc brakes Wheels: King Kong disc front hub and shimano disc rear with Sun ME14A rims Tyres: Continental Country Ride 700 x 37C Rims Sun ME14A Handle Bars: Easton EA 30 Flat bar Stem: Easton EA 30 Saddle: WTB Rocket V Street Smart Seatpost: Easton EA30.It’s a little-known fact that Dewey was granted an honorary degree in motivational speaking. That puts him into an exalted category held by the likes of Anthony Robbins, and it’s why we call this bicycle The Doctor.

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