archival and resource material for human powered recumbent tricycles

KMX Karts

http://www.kmxkarts.co.uk/

KMX TrikeThe KMX Story:

In 2000 English fire fighter Barry Smith, a former helicopter engineer, decided to build his son something “a bit different” from parts salvaged from a skip. Little did he dream it would blossom into a global business. But it did – because those first efforts produced a three-wheeled vehicle resembling a cross between a BMX and go-kart, which created quite a stir when he and son Dean took it for a spin. It was fast, it was easy to ride, it was fun and Barry was “hooked.”

Thus was born the KMX brand which has since been described as “a cool fusion of go-kart, BMX and mountain bike” with a remarkable stability due to its low centre of gravity. After two years of fine tuning, Barry and wife Yvonne launched KMX in 2002 with a trike for children, the “K Class.” Trikes for adults soon followed and today the company sells seven different models — for kids, adults and more serious cyclists. Whether someone wants to race on the flat, cycle up and down mountains, do stunts, ride to work in the open air or leisurely tour the countryside, there’s now a KMX designed to do it.

Today, KMXs are being sold in the UK, Ireland, on the European continent and in America, Australia, Japan and other parts of Asia. More importantly, from Barry and Yvonne’s perspective, KMX are building an enviable reputation for outstanding performance and customer care. In 2003 they won an award for Best New Product at the International Cycle Show in London and more recently, an accolade for being an up-and-coming UK exporter.

All KMX trikes are manufactured with 3 basic qualities in mind: Value for Money, Quality and most of all — FUN!

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KMX Venom:

Venom, The ultimate high performance road trike

The lightest and fastest of the KMX range, it’s a demon for the experienced rider or racer over 18. A light-weight wheel set with narrow, high-pressure tyres and road-bike-specific componentry reward riders with superior road-touring performance. Own it – and the road is yours.

Tech Specs

Width 32″ (81 cm)

Height 26 ½” (67 cm)

Length 73 ½” (187 cm)

Front Track 30″ (76 cm)

Wheelbase 41″ (105 cm)

Seat Height 8 ½” (22 cm)

Seat Back Angle Adjustable 39° — 45°

Steering Ackerman and Centre point

Bottom Bracket Height 15 ½” (39 cm)

Ground Clearance 5 ½” (13.5 cm) to frame

Weight 34 lbs (15.5kg)

*with light weight road wheel set

Frame TIG welded chromoly steel box with aluminium front boom

Tires Schwalbe 24 x 1.125 Stelvio rear, Schwalbe 20 x 1.125 Stelvio front

Wheels 24″ rear and 20″ front Double skinned Lightweight Jetset Alloy Rims

Gear Shifters SRAM Rival Double Tap 10 speed & 2 speed

Brakes Avid BB7 Road Disc brakes

Chain Set SRAM

Bottom Bracket SRAM Rival 50-34T 170mm Crank

Derailleur SRAM Rival rear derailleur, SRAM Rival front derailleur

Cassette Sprocket SRAM 10 speed cassette 26 – 11T

Max Rider Weight 300 lbs (135 kg) on road

X Seam Sizes Min 35 ½” (90cm), Max 44″ (112cm)

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KMX Viper:

Viper, Careful you don’t get bit.

This high-specification KMX for experienced riders chews up the road. Improved frame design raises ground clearance. A higher seat delivers better road visibility while a low centre of gravity ensures comfortable, stable cornering. With 27 gears and an Avid brake system, the power of the Viper is completely under your control. It’s a winner for long-distance touring or commuting to work.

Tech Specs

Width 32″ (81 cm)

Height 26 ½” (67 cm)

Length 73 ½” (187 cm)

Front Track 30″ (76 cm)

Wheelbase 41″ (105 cm)

Steering Ackerman and Centre point

Seat Height 8 ½” (22 cm)

Seat Back Angle Adjustable between 39 and 45°

Bottom Bracket Height 15 ½” (39 cm)

Ground Clearance 5 ½” (13.5 cm) to frame

Weight 43 lbs (19.5 kg)

Frame TIG Welded Chromoly Steel Box with Aluminium front boom

Tires Kenda K-Rad 24 x 2.3 rear; Kenda K-Rad 20 x 2.125 front. Optional: 24 x 2.00 Schwalbe Big Apple tire rear; 20 x 2.00 Schwalbe Big Apple tires front

Wheels 24” rear and 20” front Double skinned Jetset Alloy Rims with 32 stainless steel spokes

Gear Shifters SRAM SX5 – 9 speed rear and 3 speed front twist grip

Brakes Avid BB5 Disc brakes, Front disk brakes activated by a twin pull brake lever

Chain set Truvativ Blaze 44-32-22T 170mm Crank

Bottom Bracket SRAM

Derailleur SRAM X-7.0 rear derailleur, SRAM X-7 front derailleur

Cassette Sprocket SRAM 9 speed cassette 32 – 11T

Max Rider Weight 300 lbs (135 kg) on road; 225 lbs (100 kg) off road

X Seam Sizes Min 35 ½” (90 cm), Max 44″ (112 cm)

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KMX Cobra:

Cobra, Intimidation demands respect.

For men and women who crave exhilarating off-road riding on any terrain. This jack-of-all-trades KMX has a robust design with 24 gears, large spoked wheels and added ground clearance making it fast on the road and unstoppable off-road. Make no mistake, the Cobra is dangerously fun.

Overall Width 32″ (81cm)

Overall Height 26 ½” (67cm)

Overall Length 73 ½” (187cm)

Front Track 30″ (76cm)

Wheelbase 41″ (105cm)

Seat Height 8 ½” (22cm)

Steering Ackerman and Centre point

Seat Back Angle Adjustable between 39 and 45°

Bottom Bracket Height 15 ½” (39cm)

Ground Clearance 5 ½” (13.5cm) to frame

Weight 43 lbs (19.5 kg)

Frame TIG Welded Chromoly Steel Box with Aluminium front boom

Tires Kenda K-Rad 24x 2.3 rear; Kenda K-Rad 20x 2.125 front

Wheels 24″ rear and 20″ front Double skinned Jetset Alloy Rims with 32 stainless steel spokes

Gear Shifters SRAM SX5 – 8 speed rear and 3 speed front twist grip

Brakes Tektro Disc brakes, Front disk brakes activated by a twin pull brake lever

Chain set Truvativ Blaze 44-32-22T 170mm Crank

Bottom Bracket SRAM 68-113mm

Derailleur SRAM SX5. rear derailleur, SRAM front derailleur

Cassette Sprocket SRAM 8 speed cassette 32 – 11T

Max Rider Weight 225 lbs (100kg) off road; 300 lbs (135 kg) on road

X Seam Sizes Min 35 ½” (90cm), Max 44″ (112cm)

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KMX Typhoon:

Typhoon, The warning has been issued.

Especially suited for everyone from 14 and over who just want to have fun. Get fit and work those stomach muscles on this comfortable, low-maintenance, easy-to-handle KMX with stylish spoked wheels, adjustable seat and handle bars. The Typhoon packs a hefty punch of wind-in-your-hair riding action so you can exercise in style and comfort.

Tech Specs

Width 32″ (81cm)

Height 23 ¼” (59cm)

Length 71 ½” (182cm)

Front Track 30″ (76cm)

Wheelbase 41″ (105cm)

Steering Ackerman and Centre point

Seat Height 6 ½” (17cm)

Seat Back Angle Adjustable between 39 and 45°

Bottom Bracket Height 14″ (36cm)

Ground Clearance 3″ (8cm) to frame

Weight 43 lbs (19.5 kg)

Frame TIG Welded High Carbon Steel Box with Aluminium front boom

Tires 20 x 2.00 Schwalbe Big Apple tire rear; 16 x 2.00 Schwalbe Big Apple tires front

Wheels 20” rear and 16” front Double skinned Jetset Alloy Rims with 32 stainless steel spokes

Gear Shifters SRAM 4.0 8-speed rear twist grip

Brakes Tektro Disc brakes, Front disk brakes activated by a twin pull brake lever

Chainset 40T 3 piece KMX alloy crank with KMX Bash ring

Bottom Bracket Sealed Bottom Bracket unit 68-113mm

Derailleur SRAM 4.0 rear derailleur

Cassette Sprocket SRAM 8 speed cassette 32 – 11T

Max Rider Limit 225 lbs (100 kg) off road; 300 lbs (135 kg) on road

X Seam Sizes Min 35 ½” (90cm), Max 44″ (112cm)

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KMX Tornado:

Tornado, Tear through everything.

Torqued for teens over 14 and younger men who want a BMX on three wheels. Its robust frame and steel construction over mag wheels ensures a ride of unrelenting exhilaration. Jump it, skid it or push it to the limit – the Tornado does its stuff, on or off the road.

Tech Specs

Width 32″ (81cm)

Height 23 ¼” (59cm)

Length 71 ½”(182cm)

Front Track 30″ (76cm)

Wheelbase 41″ (105cm)

Steering Ackerman Direct Steering

Seat Height 6 ½” (17cm)

Seat Back Angle Adjustable between 39 and 45°

Bottom Bracket Height 14″ (36cm)

Ground Clearance 3″ (8cm) to frame

Weight 43lbs (19.5 kg)

Frame TIG Welded Hi Carbon Steel Box with Aluminium front boom

Tires 20 x 2.125 KMX tire rear; 16 x 1.9 KMX tires front

Wheels F7: 20″ rear & 16″ front nylon black mag wheels; F3: 20″ rear & 16″ front spoked wheels, alloy single skinned rim in black

Gear Shifters F7: SRAM 4.0 – 7 speed twist grip; F3: Sturmey-Archer 3 speed twist grip

Brakes F7: Tektro Disc brakes all 3 wheels, Front brakes activated by a twin pull brake lever; F3: Tektro Disc Front brakes only, independent left and right brake levers

Front Cranks 40T 3 piece alloy crank with KMX Bash ring

Bottom Bracket Token sealed unit

Derailleur/Gearbox F7: SRAM 3.0 rear derailleur; F3: Sturmey-Archer RF-RF3

Cassette Sprocket F7: 7 speed cassette 28 – 13T

Max Rider Weight 225 lbs (100 kg) off road; 300 lbs (135 kg) on road

X Seam Sizes Min 35 ½” (90cm), Max 44″ (112cm)

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KMX Cyclone:

Cyclone, You can run … or you can ride.

For young riders, 9 to 13, looking for the adrenalin rush of the KMXperience. Enough gears to climb steep hills, tear through the forest or power along the straights. Its larger steel frame, bigger seat and adjustable pedals take weights of up to 145 lbs. Engineered to handle the punishment of bigger kids, it’ll blow away the competition.

Tech Specs

Width 28″ (71cm)

Height 21 ½” (55cm)

Length 57 ½” (146cm)

Front Track 25 ½” (65cm)

Wheelbase 31″ (79cm)

Steering Ackerman and Centre point

Seat Height 5″ (13cm)

Seat Back Angle 52°

Bottom Bracket Height 10 ¼” (26cm)

Ground Clearance 3″ (7.6cm) to frame

Weight 38 lbs (17 kg)

Frame TIG Welded Hi Carbon Steel Box

Tires KMX heavy duty compound 20 x 1.95 and 12.5 x 2.25

Wheels 20″ Rear Mag Wheel, 12″ Front Mag wheels

Gear Shifters Micro 7 speed indexed twist grip

Hubs Sealed bearing Hubs

Front Brakes Self energizing hub brakes activated by a twin pull brake lever

Rear Brake Self energizing hub brake

Derailleur Shimano indexed 7 Speed

Front Cranks 40T sprocket with KMX Bash Ring and 140mm one piece crank

Cassette Sprocket 7 Speed 28T- 13T

Max Weight Limit 145 lbs (65kg)

X Seam Sizes Min 30 ½” (78cm), Max 35″ (90cm)

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KMX Storm:

Storm, Strike without warning.

A single-gear KMX for boys and girls, aged 5 to 10. Tough mag wheels and stable construction make it safe and sound. When it takes a beating, it keeps on rolling. For stunts, racing or joy riding in parks or playgrounds, the Storm performs. Plus an adjustable seat and pedals grow with your child. So put the skateboard back in the toybox.

Tech Specs

Width 28″ (71cm)

Height 21 ½” (55cm)

Length 57 ½” (146cm)

Front Track 25 ½” (65cm)

Wheelbase 31″ (79cm)

Steering Ackerman and Centre point

Seat Height 5″ (13cm)

Seat Back Angle 52°

Bottom Bracket Height 10 ¼” (26cm)

Ground Clearance 3″ (7.6cm) to frame

Weight 38 lbs (17 kg)

Frame TIG Welded Hi Carbon Steel Box

Tires KMX heavy duty compound 20 x 1.95 and 12.5 x 2.25

Wheels 20” Rear Mag Wheel, 12″ Front Mag wheels

Hubs Sealed bearing Hubs

Front Brakes Self energizing hub brakes activated by a twin pull brake lever

Rear Brake Self energizing hub brake with rear park brake button

Chainset Single Speed

Front Cranks 40T sprocket with KMX Bash Ring and 140mm one piece crank

Cassette Sprocket Single 24T

Maximum Weight Limit 88 lbs (40kg)

X Seam Sizes Min 26 ¼” (67cm), Max 32 ½” (82.5cm)

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