KTM Parts

updated 2021-08

Contents:
1. KTM History
2. 1968-72? KTM Hobby     Sachs 502/1
3. 1970-73? KTM Hobby II  Puch E50
4. 1974-79? KTM Hobby III Puch E50 Z50
5. 1980-85? KTM Hobby     Puch E50
5. 1983-91? KTM Duo xxx  Puch Z50
6. 1985-88? KTM Hobby A  Morini M1P M1K
7. 1983-91? KTM Okay xx  Morini M1P M1K M1ES M101K MO3
7. 1986-91? KTM Quattro  Morini MO4
7. 1975-85? KTM Foxi        Sachs 504/1A 505/1A, 1D, 2BX, 3BX
7. 1979-85? KTM Pony       Sachs 505/1A, 1D, 2A, 3A
8. 1992-05? KTM
Foxi        Sachs 504/??
9. 1976-78? Foxi (US)        Sachs 504/1A, 1D
8. Links to Parts (US)

 

 

Purpose: To learn what parts on unfamiliar mopeds are the same as on familiar ones.

Sources: From KTM Moped Hobby III and DataBikes KTM All Models and Moped Army

 


1. KTM History

KTM: Kraftfahrzeuge Trunkenpolz Mattighofen (Craft shop of Trunkenpolz in Mattighofen, Austria) was founded in 1934 by engineer Hans Trunkenpolz. Motorcycle production began in 1954. 

 

KTM History 1960 to 1992   from ktm-moto.lv

1963: The Comet moped is introduced and in 1966 the 10,000th Comet rolls off the line.

1968: The cross-country Penton Six Days dirt bike is produced and exported to the US.

1970: KTM begins producing its own engines. (Previously, most had Sachs motors.)
          New 250cc motocross bike is developed.
1974: Production of the KTM Hobby III begins.
1975: KTM introduces the road model Comet Grand Prix 125 RS

1978: KTM America Inc. established in Lorain, Ohio. 50cc product range extended

1981: Production of first water-cooled 125cc motocross bikes.
          Motocross models outfitted with new Pro Lever rear suspension.
          Company develops its first 4-stroke engine with water cooling.

1986: KTM becomes the first to offer front and rear disc brakes on an off-road machine.

1988: KTM stops production of scooters.

1991: KTM files for bankruptcy.
          The company is split into four arms – radiators, motorcycles, bicycles and tooling.

1992: Newly formed motorcycle division opens – KTM Sportsmotorcycle GmbH.


2. 1968-72 KTM Hobby

1968-72 KTM Hobby was launched in 1968. It had a Sachs 502/1 engine, a 50cc one-speed automatic. The automatic clutch engine was revolutionary. Most other mopeds at the time had a hand-operated manual clutch. There was a 40 km/h moped version and a 25 km/h mofa version that did not require a license. Thousands of Austrian teens found freedom and convenience on the Hobby.

Cables: There were 3 cables, throttle, front brake and start. There was no rear brake hand lever or cable. 

Controls:60’s Magura with threadless-bottomed brake and start cable holes.

1968-72 KTM Hobby Automatic

Sachs 502/1 engine

1969 Hobby controls

 

 

 

 

 

 

 

 

1969 KTM Hobby

1972 KTM Hobby

1969 front brake

 

 

 

 

 

 


3. 1970-73 KTM Hobby II

1970-73 KTM Hobby II debuted in 1970. It had a Puch E50 “low torque” engine, a 50cc one-speed automatic (Ein gang automatik 50), which debuted in 1969. “The engine build in Graz was considered for the Austrian in-country models and with 2,2hp and one speed gearbox it was similar to the old-fashioned looking Sachs engine. While the red-silver de luxe model was equipped with a legshield as protection against the weather, the standard bike was recognizable on the blue-silver varnish.”  The all-aluminum cylinder had 7 side fins. The exhaust was on the left. Tires 2.00-17.

Cables: There were 3 cables, throttle, front brake and start. There was no rear brake hand lever or cable.

Controls: 70’s Magura (open type throttle) with threaded-bottomless brake and start cable holes.

1970-72 KTM Hobby II

Puch E50 LT 1-speed
all-aluminum cylinder

’70 Hobby II controls

 

 

 

 

 

 

 

 

 


4. 1974-98 KTM Hobby III

 

1974-79 KTM Hobby III came out in 1974. It had a Puch E50 “low torque” engine, a 50cc one-speed automatic with all-aluminum cylinder. The front of the frame with gas tank was the same as a Puch Maxi. The exhaust was on the left. Thin rims and 2.00 – 17 tires. 

Cables: There were three cables, throttle, front brake and start. There was no rear brake hand lever or cable.

1974-79 KTM Hobby III

Puch E50 LT 1-speed
all-aluminum cylinder

 

 

 

 

 

 

 

 

 


1974-79 KTM Hobby III (Z50)  came out in 1974-75. It had a Puch Z50 2 speed kick start manual shift engine (Zwie gang 50). The exhaust was on the left. The wheels were the same with thin rims and 2.00-17 tires. 

Cables: There were 4 cables, throttle, front brake, rear brake and gear shift. 

1974 KTM Hobby III (2)

Puch Z50 LT 2-speed
all-aluminum cylinder

 

 

 

 

 

 

 

 


1977-79 KTM Hobby III L had new frame with a wider gas tank. It had a Puch E50 “low torque” engine, left side exhaust, long seat, cast magnesium wheels and a carrier with suitcase mountings. 2.25-17 tires. 

Cables: There were 3 cables, throttle, front brake and start. There was no rear brake hand lever or cable.

1977-78 KTM Hobby III L

Puch E50 LT  1-speed
all-aluminum cylinder

KTM “true mag”

felge (rim) 1.35×17

 

 

 

 

 

 

 

 

 


5. 1980-82 KTM Hobby, 1983-91 KTM Duo

1980-81? KTM Hobby had a Puch E50 LT “lo torque” engine, all-aluminum cylinder.
1981-82? KTM Hobby had a Puch E50 HT “hi torque” engine, steel-sleeved cylinder.

The front of the frame with gas tank was the same as a Puch Maxi. The exhaust was on the left. It had thin rims and 2.00 – 17 tires. 

It was the same as a 1974-79 Hobby III, except the Roman numeral III was eliminated, and the tires were wider 2.25-17.

Cables: There were 4 cables, throttle, front brake, rear brake and start. 

1980 KTM Hobby

1982 KTM Hobby

1981-82? KTM Hobby

 

 

 

 

 

 

 

 

 


1983-88? KTM Duo had a two-person seat, right side exhaust, and a Puch Z50 HT “hi torque” engine Zwei-gang, 2-speed manual-shift. 

Cables: There were 6 cables, throttle, front brake, choke, and start, clutch, shift.

Stickers: Here is where this 80’s KTM sticker set is sold. 

1983-84 KTM Duo

Puch Z50 HT 2-speed
steel-sleeved cylinder

 

 

 

 

 

 

 

 

 


6. 1983-91 KTM Hobby A, Okay, Quattro

1985-88? KTM Hobby A  was a 1980’s model with a Franco Morini M1 one-speed automatic engine. The M1 had a case reed valve for more torque, quicker take-off. Wheels were Grimeca “6 Razze Paralelle” 1.35×16, with 2.25-16 tires.

Cables: There were 3 cables, throttle, front brake and start. There was no rear brake hand lever or cable.

1986 KTM Hobby A

Morini M1 1-speed

 

 

 

 

 

 


1983-88? KTM Okay had several Morini engines, all with Dellorto SHA 14/12 carburetor. Wheels were Grimeca “6 Razze Paralelle” 1.35×16 cast aluminum (one-chain rear), with 2.25-16 or 2.50-16 tires. Also 2.00-16 tires on 1.20×16 rim models.

KTM Okay Automatic Morini 
KTM Okay Automatic engine sprockets
KTM Okay Automatic  M1K xx 13 x 34

KTM Okay E-Starter x M1ES x 13 x 34
KTM Okay Vario xxxx M101K  10 x 40
KTM Okay 3-Gang xx  MO3 x  13 x 34
KTM Okay Automatic  M1P xx 13 x 34

1983 KTM Okay

 

 

 

 

 

 

 

 

 

 

 


1986-91? KTM Duo Quattro was a four speed version of the Duo. It had a Franco Morini MO-4 engine, 4-speed manual kick start.

Late 1980’s KTM Duo Quattro

 

 

 

 

 

 

 

 

 

 

 


7. 1975-85 KTM Foxi, Pony

 

1975-77 KTM Foxi had new stickers and a Sachs 504/1A engine, mounted with an adaptor bracket to fit the same frame that was made for a Puch engine. It is the same as the US model Foxi Deluxe except for electrical equipment. Tires 2.00-17.

Cables: There were 5 cables, throttle, choke, front brake, rear brake and start. 

1975 KTM Foxi

1977 Foxi Deluxe (US)

Sachs 504/1  1-speed

 

 

 

 

 

 

 

 

 


1977-79 KTM Foxi L had new frame with a wider gas tank. It had a Sachs 504/1A engine, mounted with an adaptor bracket to fit the same frame that was made for a Puch engine. It is the same as the US model Foxi Deluxe except for electrical equipment. KTM cast magnesium wheels (two-chain-rear) 1.35×17 with 2.25-17 tires.

Cables: There were 5 cables, throttle, choke, front brake, rear brake and start. 

1978 KTM Foxi L

1977 Foxi Baron (US)

 

 

 

 

 

 

 

 

 

 

 


1979-82 KTM Foxi had a new frame and a Sachs 505/1D foot-brake engine, mounted directly. KTM cast magnesium wheels 1.35×17 with 2.25-17 tires.

1978 KTM Foxi with Sachs 505-1D (Argentina)

 

 

 

 

 

 

 

 

 

 


1979-85? KTM Foxi L had a Sachs 505/1BX 1-speed automatic engine with foot brake 25 km/h. Wheels were Grimeca “6 Razze Paralelle” 1.35×17 cast aluminum (one-chain rear), with 2.25-17 tires.

Cables: There were 3 cables, throttle, front brake and start. There was no rear brake hand lever or cable.

1982-85? Foxi L (2-gang) had a Sachs 505/2BX 2-speed manual shift engine with foot brake 25 km/h. Wheels were Grimeca “6 Razze Paralelle” 1.35×17 cast aluminum (one-chain rear), with 2.25-17 tires.

Cables: There were 4 cables, throttle, front brake, clutch and start. There was a left hand lever for clutch.

1983 KTM Foxi L

 

 

 

 

 

 

 


1979-85? KTM Foxi 505 N had a Sachs 505/1A engine with foot brake. The frame no longer had a pedal shaft behind the engine. The pedal shaft was now inside the engine. That eliminated the pedal chain and freewheel. So the new rear wheel had the brake on the right, instead of on the left inside the sprocket. 

Cables: There were 3 cables, throttle, front brake and start. There was no rear brake hand lever or cable.

1981 KTM Foxi 505 N

1983 KTM 505 N

Sachs 505/1A foot brake

 

 

 

 

 

 

 

 


1982-86? KTM Foxi 505 S had a Sachs 505/2D 2-speed manual shift engine.

Cables: There were 6 cables, right: throttle, front brake, choke, left: start, clutch, shift.

1983 KTM Foxi 505 S

Sachs 505/2D 2-speed

 

 

 

 

 

 

 


1979-85? KTM Pony S had a Sachs 505/2A 2-speed or Sachs 505/3A 3-speed engine, manual shift. The frame was a tube type with a detachable gas tank, unlike the Hobby’s and Foxi’s. Wheels were Grimeca “6 Razze Paralelle” 1.35×17 cast aluminum (one-chain rear), with 2.25-17 tires.

Cables: There were 6 cables, right: throttle, front brake, choke, left: start, clutch, shift.

1983 KTM Pony S

Sachs 505/2D 2-speed

 

 

 

 

 

 

 


8. 1992-05 KTM

This had a Sachs 504 series one speed automatic engine. There are no stickers or model names. Wheels were Grimeca “6 Razze Paralelle” 1.35×16 cast aluminum (two-chain rear), with 2.25-16 tires.

Cables: There were 5 cables, right: throttle, front brake, choke, left: start, rear brake.

1998 KTM remake

 

 

 

 

 

 

 

 


9. 1976-80 KTM Foxi (US)

 

1976-78 Foxi Deluxe was a US model with a Sachs 504/1A engine. An adaptor bracket allowed the Sachs 504 engine to fit the frame designed for a Puch E50 engine. The Foxi Deluxe had a solo seat and spoke wheels. The front of the frame with gas tank was the same as a Puch Maxi. Thin rims and 2.00 – 17 tires. 

Cables: There were 4 cables, throttle, front brake, rear brake and start.

Foxi Deluxe

Foxi Deluxe

Foxi Deluxe Specs

Foxi Deluxe

Sachs 504/1  1-speed

 

 

 

 

 

 

 

 

 


1977-78 Foxi Salzburg was a US model with a Sachs 504/1A engine. The exhaust was on the left. The 1976-77 Foxi Salzburg had a thicker solo seat, dual chrome luggage racks, and spoke wheels. 1977-78 had a long seat. Thin rims with 2.00-17 tires.

Foxi Salzburg

Foxi Salzburg

Foxi Salzburg

Foxi Salzburg

Sachs 504/1  1-speed

1977 Foxi GT Deluxe made by KTM

1977 Foxi Salzburg

 

 

 

 

 

 

 

 

 


1977 Foxi Baron was a US model with a Sachs 504/1A engine. The Foxi Baron had a long seat and Felge cast magnesium wheels. Tires 2.25-17.

 

Foxi Baron

Foxi Baron

Foxi Baron

Foxi Baron

Sachs 504/1 engine

 

 

 

 

 

 

 

 

 


Info Foxi KTM

KTM (US models)

1977-78 Foxi Baron was a US model with a Sachs 504/1A engine. It was the same as the 1977 model except for taller clamp-on handlebars. Tires 2.25-17.

1977 KTM Foxi Baron

 

 

 

 

 

 

 

 

The model names “Salzburg” and “Baron” were not on the bikes anywhere. Instead all three models were labeled as “Deluxe”. So only Foxi owners that had this brochure called their bikes Deluxe, Salzburg, or Baron. Every one else called their bike Foxi Deluxe, because that is what it says. So in a way, there are three kinds of Foxi Deluxe: Foxi Deluxe, Foxi Deluxe (Salzburg), Foxi Deluxe (Baron).  

 

 


Links to Parts for US Models (and others)

 

Sachs Bing Carburetor parts are in Parts/Carburetor/Bing 85
also   Bing Jets      Bing Service

Sachs 504 Engine parts are in Brands/Sachs/Sachs 504/505
Pistons, Rings   Bearings, Bushings   Seals, O-rings   Engine Hardware

Controls and Levers are in Parts/Controls/Magura

Cables  are in Parts/Cables/KTM Cables

Gas Valve is #A33, a special M16x1 side-mount

Gas Cap is a 30 mm press-in type, see Parts/Frame/Gas Caps

Tail Lights are CEV 9350 (most ’76-77) or CEV 9400 (most ’77-80)

Bulbs, Head Lights are in Parts/Electrical/Bulbs, Headlights

Switches are in Parts/Electrical/Switches

Grimeca Hubs, axles, brakes

Spokes are 188 x 2.5 and 192 x 2.5 in Parts/Wheels/Spokes

Tires and Tubes  2.00-17 or 2.25-17, see Parts/Wheels/Tires & Tubes

Spark plugs, points are in Parts/Ignition/Plugs, Points, Condensers

Pedal Arms are 605R and 605L in Parts/Drivetrain/Pedal Parts
also   Chains   Sprockets   Pedals

KTM Side Covers: The KTM light grey chain guards, aka engine covers, are two pieces on each side. The back pieces are fixed to the swing arm. The front pieces, aka “side covers”, detach by quarter-turn plastic fasteners. They say “De Luxe” within the black horizontal stripe. They are what gets lost and are not available, sorry. However, Myrons has most of the screws and fasteners, and the rear chain guard pieces. 

KTM Speedometer: CEV 40mph, 60mm diameter, dark blue background with white numbers, CEV speedo driver type is “11mm Left 17”, Speedometer cable is “CEV” type, see speedos

Some frame rails, shocks, luggage racks, forks, fenders, are available but not listed here, yet. 

 

 

The following parts are the same on a KTM Foxi and a Sparta Foxi: Sachs 504 engine, CEV headlight, Magura levers, CEV switches, and possibly the CEV horn.

The following parts are different: the KTM frame (with lifting handle), fork, and frame, straight not curvy like Sparta, the CEV magneto 80mm 3-wire with an external ignition ground (blue wire), not Bosch 4-wire with internal ignition ground, the 17″ rims with Grimeca hubs and brakes, not 16″ rims with Leleu, the rear brake plate is specific to KTM and Hercules and is rare because it gets bent,  the brake light wiring, normally closed switches in series, not normally open switches in parallel. See Service/Electrical/Wiring Diagrams/KTM Foxi for more info.