FRAME MATERIALS

ALUMINUM
is light and fairly resistant to corrosion. Large diameter tubes provide stiffness necessary for off road performance. Reducing wall thickness maintains strength and keeps the weight down. The properties of aluminum improve when other materials are added to form an alloy. The aluminum - magnesium - silicon 'system' is one of the most important in aluminum alloy metallurgy. Dissolving and precipitating of the compound magnesium silicide in aluminum forms the basis of 6000 series aluminum. Other elements such as copper, zinc and chromium are added to enhance basic properties of the alloy. A higher percentage of silicon, magnesium and chromium differentiate 6061 from weaker 6000 series alloys. Increased percentage of zinc helps makes 7000 series aluminum the strongest of the aluminum alloys. The increase in strength adds difficulty in fabrication. Higher alloy content makes the material harder to manipulate and weld.

Aluminum has a finite fatigue life. The more you work it, the greater potential for failure. Knowing this, one main goal of a tubing fabricator is to develop processes to extend an aluminum tube's life while keeping weight to a minimum. If you use a plain gauge tube that is thick enough for a strong weld area, the overall weight of the tube tends to be a little heavy. By butting ends of the tube, you can have a thick wall at the weld zones and a thinner wall in the middle of the tube away from weld zones, reducing frame weight. The typical transition zone between thick and thin material tends to be rather short., therefore the highest stresses tend to remain at the weld zones. The faster the stress is applied, the shorter the frame life.

Easton Ultralite tubing is not butted; it is tapered. Through a special technique, "Easton's cold-work process achieves an extreme differential between thick and thin wall tube sections - with a remarkably smooth transition." The large reduction in tubing material makes the frames light and responsive. The other major benefit of the tapering is that it helps distribute stress down the tubes length and not leave it concentrated at the weld zone.

FRAME DESIGN & SPECIFICATIONS - ALUMINUM DOWNHILL & DUAL SUSPENSION

STAB PRIMO
Stab Primo is designed to withstand the rigors of World Cup Downhill racing.
Adjustable wheelbase delivers up to 9" of rear wheel travel. Designed for 7.5" of travel up front.

• Forged swing arms, chain stay yolks, seat stay yolk, head tube, bottom bracket
• Machined replaceable dropouts with 12mm through axle. Adjustable wheelbase
• Seat tube gussets. Cartridge bearing pivots
• M.R.P. Chain guide system.
• Double clamp compatible
• Available as frame only, complete bike weighs 46.5 lbs (Medium)

STINKY NINE
Stinky Nine is an extreme Out of Bounds bike that works with double chainring & front derailleur.
Adjustable wheelbase delivers up to 9" of rear wheel travel. Designed for 7.5" of travel up front.

• Forged swing arms, chain stay yolks, seat stay yolk, head tube and bottom bracket
• Machined replaceable dropouts with 12mm through axle. Adjustable wheelbase.
• Cartridge bearing pivots. Double clamp compatible.
• Available as frame only, complete bike weighs 41.9 lbs (18")

STINKY / STINKY DEE-LUX / STINKY PRIMO
Stinky bikes have highly active, plush Out of Bounds frame designs and work with triple chain wheels.
They are suited for steep drop-offs and rough terrain, but are not indestructible.

• Forged swing arms, chain stay and bottom bracket yolk, seat stay yolk, bottom bracket, head tube
• Forged Clump Beef Box dropouts with replaceable derailleur hanger. Cartridge bearing pivots.
• Seat tube gussets. Double clamp compatible.
• Available as frame only, complete bike weighs 35.9 lbs (18")

BEAR, BEAR DEE-LUX
Bear bikes are made for Back Country riding. They bridge the gap between lightweight Cross-Country and Freeride – a combination of XC geometry built with Kona Clump Light butted tubing. .

• Forged swing arms with reinforced bridge, chainstay & seatstay yokes, bottom bracket, head tube, dropouts.
• Available as frame only, complete bike weighs 28.5 lbs (Bear Dee-Lux), 29.9 lbs (Bear18").

KING KIKAPU / MOKOMOKO
Kikapu and Moko frames are premium dual suspension models for high performance off-road

• Forged swing arms with reinforced bridge, chain stay & seat stay yokes, bottom bracket, head tube, dropouts.Cartridge bearing pivots. Forged dropouts with replaceable derailleur hanger
• Available as frame only, complete bike weighs 24.1 lbs (King Kikapu18"), 26.1 lbs (Mokomoko)

KAHUNA, MANOMANO

Same design as Moko/Kikapu these bikes offer the same performance but are slightly heavier.

• Forged aluminum swingarms w/reinforced bridge, chainstay yokes, seattube pivot, bottom bracket & head tube.
• Forged dropouts with replaceable derailleur hanger. Cartridge bearing pivots.
• Available as frame only, complete bike weighs 28.5 lbs (Kahuna18"), 28.9 lbs (Manomano)

KONA HARDTAIL DESIGN FEATURES

• Long top tube provides more room for correct positioning and free body movement
• Allows for more stand-over clearance, critical on dual suspension due to higher bottom bracket
• Vertically more compliant main frame absorbs more shock than frames with horizontal top tubes
• Puts rider in secure position for downhill sections

• 16.75" chain stays provide perfect balance of stability and power transfer when out of the saddle
• Shorter seat stays have less deflection during braking and accelerate quicker than longer stays
• Kona custom butted stays make a rear triangle for the most efficient rear power transfer feasible

• Lower attachment of top tube has more stand-over, more compliant frame and compact rear triangle. Custom external butting provides additional material to strengthen extended portion.
• Kona uses seat clamps that provide worry free locking power. Clamps are easy to replace if ever damaged, and eliminate the welded seat clamps, which can distort the seat tube during fabrication

• Provides stronger support at top tube and down tube intersection for suspension forks
• Distributes shock better and prolongs headset bearing life
• Stronger steering position improves balance and gives more control in rough terrain

KULA
The Kona Kula is a lightweight frame with lightweight components for cross-country racing..

• Constructed of Easton Ultralite tubing. Down tube gusset.
• Forged bottom bracket, head tube. Forged dropouts with replaceable derailleur hanger
• Available as frame only, complete bike weighs 22.9 lbs (Kula18")

PAHOEHOE 
Lightweight production frame with durable components designed for aggressive single track riding.

• Constructed of 7005 triple butted tubing. Down tube gusset
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger
• Available as frame only, complete bike weighs 25.5 lbs (Kula18")

MUNI-MULA 
The Kona Muni-Mula is a lightweight frame designed for cross-country riding and racing.

• Butted 6061 main frame with straight gauge rear triangle. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger.
• Available as frame only, complete bike weighs 23.9 lbs (18")

 CALDERA
The Kona Caldera is a sturdy frame designed for fun and technical single track riding.

• Butted seat tube with straight gauge 6061 tubing. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger
• Complete bike weighs 27.9 lbs (18")

CINDER CONE 
The Kona Cinder Cone is a sturdy frame designed for fun and technical single track riding

• Butted seat tube with straight gauge 6061 tubing. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger
• Complete bike weighs 26.9 lbs (18")

NUNU
The Kona Nunu is designed for fun and technical single track riding.

• 7005 aluminum tubing. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger.
• Complete bike weighs 25.9 lbs (18")

BLAST
The Kona Blast is designed for fun and light duty trail riding.

• 6061 aluminum tubing. Forged bottom bracket and head tube.
• Down tube gusset. Forged dropouts with replaceable derailleur hanger
• Complete bike weighs 26.9 lbs (18")

FIRE MOUNTAIN
The Kona Fire Mountain is designed for fun and light duty trail riding.

• 6061 aluminum tubing. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger.
• Complete bike weighs 27.9 lbs (18")

HAHANNA
The Kona Hahanna is designed for fun and light-duty trail riding.

• 6061 aluminum tubing. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger.
• Complete bike weighs 27.9 lbs (18")

• 6061 aluminum tubing. Down tube gusset.
• Forged bottom bracket and head tube. Forged dropouts with replaceable derailleur hanger.
• Complete bike weighs 27.9 lbs (18")

• 6061 aluminum tubing. Forged bottom bracket and head tube
• Forged dropouts with replaceable derailleur hanger
• Complete bike weighs 26.9 lbs

• Forged chain stay yoke, bottom bracket, head tube, dropouts w/ replaceable hanger
• Double clamp compatible. Available as frame only. Complete bike weighs 31.9 lbs (18")

• Forged chain stay yoke, bottom bracket, head tube, dropouts with replaceable hanger
• Double clamp compatible. Available as frame only. Complete bike weighs 31.9 lbs (18")