CNC-machined mountain bike hubs ("five-stroke"), developed, manufactured and assembled in Germany

assembly industries, Tibor Simai

MunichNew on Amplifa

2009Founding idea (launch 2011)

2011Launch of the five-stroke hubs

200–375 gWeight per hub

About assembly industries

assembly industries is a Munich-based sole proprietorship run by Tibor Simai, a former professional mountain bike and BMX rider who worked for years in the development and test teams of bike and component manufacturers. The company manufactures the "five-stroke" hubs for mountain bikes – built for hard use in dirt jumping, slopestyle, pumptrack and street riding. The hub bodies are CNC-machined, and the products are manufactured and assembled in Germany. The rear hub combines a lightweight aluminium axle with steel windings for stiffness; the surfaces are polished or anodized in seven colours (red, blue, turquoise, purple, gold, orange, black). Sales are handled directly via e-mail, without any retail trade; test riders in 2010 included Andi Wittmann, Benny Korthaus and Rob J.

Site: Munich
Processes: CNC machining of hub bodies (CNC machined hub bodies), Assembly of mountain bike products (hubs designed, manufactured and assembled in Germany), Anodizing (anodized in red, blue, turquoise, purple, gold, orange or black), Polishing (polished aluminum), Design/Engineering (designed in Germany, development and testing teams), CNC machining, Design and development of bicycle components, Assembly (manufactured and assembled in Germany)
Materials: Aluminium (polished, anodized; aluminium axle), Steel (steel windings of the rear axle), Aluminium, Steel
Industries: Bicycle accessories / Mountain bike (dirt, slopestyle, pumptrack, street), Bicycle accessories / Mountain bike (dirt jump, slopestyle, pumptrack, street)

01
Engineering/Design
02
CNC machining of hub bodies
03
Anodizing/Polishing
04
Assembly
05
Direct sales via e-mail

Materials & Processes

Aluminium

Hub bodies and front axle, polished or colour anodized

Steel

Steel windings of the rear axle for stiffness at low weight

Locations

Munich

Headquarters / Sales

Part weight / size: 200–375 g per hub
Materials: Aluminium, steel

Industries

Bicycle accessories / Mountain bike (dirt, slopestyle, pumptrack, street)Bicycle accessories / Mountain bike (dirt jump, slopestyle, pumptrack, street)

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
CNC machining of hub bodies (CNC machined hub bodies)Machining	–	–	–	–	Aluminium
Assembly of mountain bike products (hubs designed, manufactured and assembled in Germany)Assembly	–	–	–	–	Aluminium, Steel
Anodizing (anodized in red, blue, turquoise, purple, gold, orange or black)Surface treatment	–	–	–	–	Aluminium
Polishing (polished aluminum)Surface treatment	–	–	–	–	Aluminium
Design/Engineering (designed in Germany, development and testing teams)Engineering	–	–	–	–	–

Additional services

CNC machiningDesign and development of bicycle componentsAssembly (manufactured and assembled in Germany)Direct sales via e-mail (no retail trade)

Reference customers

Andi Wittmann (test rider)Benny Korthaus (test rider)Rob J (test rider)

History

2009
Founding idea by Tibor Simai, about two years before the product launch
2010
Season-long testing of the hubs by German freeriders (including Andi Wittmann, Benny Korthaus, Rob J)
2011
Launch of the first products, the "five-stroke" hubs