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STEEL MOUNTAIN BIKE HARDTAIL

TANZANITE

Ride any trail

“TANZANITE. Steel is real and offers legendary ride characteristics and durability.”

DESIGN PHILOSOPHY AND CHARACTER

KONSTRUVTIVE TANZANITE steel bikes are designed for a wide range of applications.

With the classic frame material of steel, we are still staying true to our philosophy of „Less Mass – More Joy on any Terrain“.

DETAILS

Typical for KONSTRUCTIVE CYCLES is the consideration of every detail to make this model ready for every circumstance as well: agile All-Mountain-Geometry, Front Derrailleur compatibility, Single-Speed compatibility and adjustable chainstay length (425 – 435 mm) through rocker-drop-outs, ISCG 05-mount, post-mount discbrake mount, room for wide tires, exchangeable drop-outs for different axle standards, and lots of other features (see below).

FRAME

The beautifully welded steel-frame is made of the highest grade tapered tubes we could find. Just like all of our other models, the TANZANITE is of course manufactured by the finest craftsman in Europe and assembled in Berlin, Germany.

RANGE OF APPLICATION

Some would even call it ENDURO, we call it R.A.M.: Ride and Race All Mountain. With the large range of compatible fork-travel lengths of 100 to 140 mm, everybody can find their perfect setup to have fun in even the gnarliest terrain. In our standard setup with a 120 mm fork and the KONSTRUCTIVE all-mountain-kit we get a complete weight of 10,5 kg. With that, the bike will not weigh you down on the climbs but be a trustful companion on all your epic rides no matter if it’s going up or down.

FULL-CUSTOM DREAM-BIKES

TANZANITE frames can be individually fitted and constructed to your body measures. The Full Custom Option also entails the fitting of the bike to your individual needs when it comes to ride characteristics. From a race oriented geometry through a comfort oriented geometry all the way to a travel bike geometry for extremely long rides our portfolio offers optimization potentials which are based on bio-mechanic principles.

TECHNICAL DETAILS OF THE PICTURED BIKE

TANZANITE PRO XX1 PRO Bike

Size / Bike weight / Frame weight: Large / 10,5 kg / 2.300 g

Design Style and color: Konstructive Raw Steel

Dream-Bikes for Dream-Rides

Custom Bikes offer more fun than standard bikes. Take our word for it. We have been riding them for 30 years.

• Most advanced fabrication methods
• Developed in Germany, handmade in Europe
• Typical steel ride qualities and frame durability
• Excellent stiffness-to-weight-ratio
• Custom sizes and tailor-made frame building with individual features available

• Custom colour and graphic design options available
• Large selection of configurable options to create the ultimate Dream Bike

Ideal for

OFFROAD RIDERS & RACERS

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Advanced Cycling Skills and Endurance Training Programs are the perfect addition to your Dream Bike!

Photos

Craftsmanship

Our Master Craftsmen build High-Performance Bicycle Frames with Premium Steels and Advanced Carbon Composite Materials from Europe.

Frame Geometry

Frame sizeSMLXL
Seat TubeA390425470520
Effective Top TubeB580596615635
Seat Tube AngleSA74°74°74°74°
Head Tube AngleHA68°68°68°68°
Chainstay LengthC420420420420
Horizontal ChainstayHC415415415415
BB-DropD65656565
BB-HeightH310310310310
Head Tube LengthS90100110120
Fork LengthF515515515515
Reach R404417433449
StackSt624633643652
WheelbaseW1094111011301150
Measured in millimeters.

Specifications and Frame Details

DESIGN PHILOSOPHY
Modern and optimized steel frame tubes from selected steel manufacturers specific to load
Frame design with sloping top tube for low frame weight and great handling characteristics
Compatible with rigid forks with tapered steerer tubes
Developed in Berlin; Germany; handmade in Europe
FRAME WEIGHT
Low frame weight. 2.300 g in size large
FRAME MATERIAL
High-Performance CroMoly Steel
Durable brushed surface
FEATURES
Post-mount disc mount inside of rear triangle for 160mm discs
External shift-cable routing under down-tube. Easy serviceable.
Tire clearance for 29 x 2.35 inch tires (tested with 2.35" Schwalbe Nobby Nic tires)
Tire clearance for 27.5"Plus x 3.0 inch tires (tested with 3.0" Schwalbe Nobby Nic tires)
Removable derailleur hanger
HEADSET
44 mm head tube for mixed taper head-sets
SEATPOST
31,6 mm seatpost diameter; 400 mm length recommended
Seatpost clamp with 35 mm diameter
DERAILLEUR
Front derailleur clamp with 34,9 mm diameter
„Top-Swing“ or „Bottom-Swing“ compatible with cable from below (Bottom-Pull)
TRANSMISSION
Compatible with 1 speed; 2 speed and 3 speed systems
Compatible with SRAM Eagle; chainring up to 34 teeth
73 mm wide Press Fit 30 bottom bracket with alloy interface
Rear axle system: 148 mm x 12 mm through axle
COLORS
Raw steel with clear coat for the most robust and lightest surface
Custom colors are available for our Custom Dream Bikes
SPECIAL FEATURE
Konstructive steel frames are completely repairable.
Subject to change without notice

Dream-Bike Manufactory

Configure your ultimate Dream Bike. Our Konstructive Dream Bike Consultants will help you to select the right components and wheelsets from the best premium manufacturers. Based on your personal preferences we will design the look of your bike. Individual paint schemes and graphic designs are available for frames, forks, components as well as wheel systems. You can choose any component and groupset for your drivetrain, shifting and braking system that the market has to offer. We assist you in finding the best parts for your field of use and cycling goals. Just contact us any time to start your Dream Bike project.

Dream-Bike Configuration Tool

We create bikes based on your body dimensions, wishes and personal preferences.

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