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Klein Mountain Bikes

Klein is a bicycle making founded by Gary Kein. Gay Kein was a pioneer in oversized aluminum tube bicycle building. He developed many building techniques when he was an engineering student at MIT. Klein was purchased by Trek in 1995 and there's recently been rumors of Trek abandoning the Klein brand.

Klein has always put an element of refinement and hand-crafted quality into their mountain bike frames. The Attitude line of mountain bikes is a fine example of this. All tubes of the aluminum Klein Attitude are highly manipulated and butted to provide maximum weight savings as well as refined ride. The Kein Attitude hardtail has been praised for it's racy demeanor, agile handling, light weight, climbing prowess and superior paint job.

Klein mountain bikes should be a consideration of any rider who's looking for a super efficient, super smooth climber. They're also appealing for the rider who wants that hand-crafted attention to detail, but doesn't quite have the cash to go full-custom.

Vintage 1995 Klein Quantum Road Bike 55cm MEDIUM Aluminium Shimano 600
Vintage 1995 Klein Quantum Road Bike 55cm MEDIUM Aluminium Shimano 600
   $528.63
Vintage 1998 Klein Mantra Comp Rishi Race Black, Answer Manitou Spyder Fork- USA
Vintage 1998 Klein Mantra Comp Rishi Race Black, Answer Manitou Spyder Fork- USA
   $975.00
Klein Palomino V full suspension mountain bike complete very nice dh RARE
Klein Palomino V full suspension mountain bike complete very nice dh RARE
   $475.00
Vintage 1991 Klein Dolomite Attitude Mountain Bike 19in MEDIUM Original Paint
Vintage 1991 Klein Dolomite Attitude Mountain Bike 19in MEDIUM Original Paint
   $2,999.99
VERY RARE ORIGINAL VINTAGE KLEIN STAGE COMP  50 CM BEAUTIFUL CONDITION
VERY RARE ORIGINAL VINTAGE KLEIN STAGE COMP 50 CM BEAUTIFUL CONDITION
   $800.00
Klein Mountain Bike Attitude Frame Metallic Green size Large
Klein Mountain Bike Attitude Frame Metallic Green size Large
   $75.00
KLEIN ATTITUDE COMP MOUNTAIN BIKE MEDIUM 54 CM DEORE XTR SHIMANO
KLEIN ATTITUDE COMP MOUNTAIN BIKE MEDIUM 54 CM DEORE XTR SHIMANO
   $500.00
1998 Klein Quantum Race 63cm Stock Ultegra VGC
1998 Klein Quantum Race 63cm Stock Ultegra VGC
   $989.00
2000 Klein Mantra Carbon*Large*650B or 27.5 Wheelset*Complete*Disc Brake*XT*MTN
2000 Klein Mantra Carbon*Large*650B or 27.5 Wheelset*Complete*Disc Brake*XT*MTN
   $1,399.00
KLEIN ATTITUDE MOUNTAIN BIKE MEDIUM. In excellent condition XT parts
KLEIN ATTITUDE MOUNTAIN BIKE MEDIUM. In excellent condition XT parts
   $500.00
Klein Mantra Race Full Suspension- Spinergy Rev X Roks  - Carbon Wheels
Klein Mantra Race Full Suspension- Spinergy Rev X Roks - Carbon Wheels
   $1,000.00
VGUC Klein Quantum 12-Speed Red Road Bicycle Shimano RSX/600 Ready to Roll!
VGUC Klein Quantum 12-Speed Red Road Bicycle Shimano RSX/600 Ready to Roll!
   $746.98
2000 Klein Quantum Road Bike, Ultegra, Zipp, Cinelli, FSA
2000 Klein Quantum Road Bike, Ultegra, Zipp, Cinelli, FSA
   $1,200.00
Klein Performance Road/commuter/touring bike Chehalis-built!
Klein Performance Road/commuter/touring bike Chehalis-built!
   $500.00
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Featured Klein Mountain Bike Video

This video looks to be a little dated, but there is some good footage of a couple guys rippin' it on Klein Attitude hardtails.