The Kreidler Florett is a German classic chain-drive 50cc two-stroke moped / lightweight platform — not a modern CVT scooter. In the US it is rarer than Puch or Tomos, parts patience is part of ownership, and the name “Florett” is easy to confuse with the American Flory MP-9 / MP-19 imports. This page stays on company history, identity traps, and high-level ownership notes. Full teardown steps belong in the manuals, not here.

Company history — Kornwestheim

Secondary histories commonly report that Kreidler was based in Kornwestheim (between Ludwigsburg and Stuttgart); that Anton Kreidler founded the firm in 1903 as a metal and wire works (Kreidlers Metall- und Drahtwerke); and that motorcycle production started in 1951. Treat those founding dates as commonly reported background — not courtroom fact — until you are citing a primary company record.

Medium confidence (repeated secondary claim): by 1959, about one third of German motorcycles were Kreidlers. Use it as historical color only.

Medium confidence (GP era): Kreidler was active in 50cc Grand Prix racing in the 1970s into the early 1980s. Rider titles on Kreidler are commonly counted as seven — do not use the inflated “nine” figure that appears on some wiki pages. Specific championship years are omitted here until they are confirmed from a primary results source. Secondary histories place the original company’s wind-down in the early 1980s (around 1982) — same “commonly reported” caution. Later badge uses of the Kreidler name are out of scope for this classic-moped page.

What “Florett” means (and what it doesn’t)

In collector talk, Florett points at Kreidler’s 1960s–1970s sport-oriented 50cc two-stroke machines — chain final drive with a gearbox/clutch package. Exact engine-family labeling (early Komet through later MK) is only low / soft confidence in the verified pack. Until a stamped engine code and a matching factory sheet agree, do not treat Komet→MK as a hard parts-interchange map. Verify in your manual before ordering tops or cases by nickname alone.

US Flory (MP-9 / MP-19) vs European Florett

US riders usually meet Kreidler as the Flory MP-9 and MP-19. Those are not drop-in twins of European Florett engines. Field notes from the verified ownership pack (still: measure your bike):

  • Cylinder stud spacing differs between Flory (MP-9 / MP-19) and Florett — do not assume jugs and tops swap across the Atlantic.
  • MP-19 commonly includes an extra magneto wire to charge a small battery for turn signals — find it before you “simplify” the harness.
  • Wrist-pin / roller hole sizes: European remake pistons are often cited with a 14 mm hole vs American 12 mm. Mixing them without measuring is a scrap-piston risk. Starting-point warning only — verify in your manual and with a caliper on the parts in hand.
  • Piston crowns may carry letter size codes (examples reported: H, D). Match piston to cylinder. Letter codes are ID aids, not a jetting chart.
  • Clutch pads on these transmissions are known to unglue after heat or hard use — slip under load is a clutch problem until proven otherwise.
  • US parts scarcity is real. Expect long waits from overseas sources. There were no commonly documented factory kit programs for the American Kreidler mopeds the way some other platforms got aftermarket jugs — plan around stock architecture first.

If a listing says “Florett” but badges or paperwork say Flory / MP-9 / MP-19, believe the stamped ID and the stud pattern, not the marketplace title.

Drive & service (high-level only)

These machines are chain final drive with an internal gearbox / clutch package — not a scooter belt CVT.

  • Transmission fluid: Type F ATF is the usual US starting-point call-out. Capacity and grade: verify in your manual before you fill. Wrong fluid and worn cover bearings show up as noise, slip, and idle “shake.”
  • The shakes: Idle vibration in gear is often chased with shaft shim stacks and side-cover / bearing condition — not with a bigger main jet. This page does not walk the full shim procedure. Use factory repair literature on the manuals hub; go slow with cover gaskets.
  • Clutch work: Pad failure is a known gotcha. Tool access and reassembly order matter — manual first; treat photo essays as research, not gospel.
  • Vent / linkage leaks: Fluid near the clutch linkage is sometimes a clogged vent rather than a doomed seal set. Access can mean dropping the motor — again, manual first.
  • Chain & sprockets: Slack, lube, hooked sprockets as a set. Exact free-play millimeters are not invented here — measure per your manual.

Oil approach follows your Kreidler documentation. Do not copy Puch or Tomos premix ratios onto a Kreidler without checking the book. General two-stroke literacy: two-stroke oil.

Performance posture — stay mostly stock

Owner culture leans mostly stock. People experiment with exhaust, intake, and clutch feel, but this hub will not publish guaranteed mph from forum runs, will not invent Bing jet sizes or timing degrees, and will not name shops in the body.

  • If you change airflow or exhaust restriction, expect to re-jet and plug-chop — method in carb jetting. No Kreidler starting-jet table here until one is confirmed from a factory source.
  • Lean experiments seize top ends. On a rare bike with overseas parts, sorted stock usually beats a half-finished pipe project.

Buying & ownership

  • Identify MP-9 vs MP-19 vs European Florett before you price parts — stud spacing and electrics differ.
  • Warm compression vs a known-good runner; confirm the engine turns freely.
  • Inspect frame rust (seat tube, down tube, dropouts) and swingarm bushings.
  • Feel for clutch slip and gearbox shake; budget clutch pad and ATF service on any “runs good” claim.
  • Verify title / VIN match. Confirm your state’s moped class via US moped laws (not legal advice — verify with your DMV; laws change).
  • Plan a carb clean, fresh plug, fuel lines, and final-drive service after purchase. Full checklist: buying guide.

FAQ

Is a Kreidler Florett a moped or a scooter?
On MopedMasters it is a classic chain-drive moped / lightweight — not a modern CVT scooter. See moped vs scooter.
Is my US Flory the same as a European Florett?
No. Treat MP-9 / MP-19 Flory and European Florett as related but not parts-identical. Stud spacing differs — measure before you order.
How many 50cc world titles did Kreidler win?
Commonly counted as seven rider titles on Kreidler. Do not use the inflated “nine” count from some secondary sources. Specific years are omitted until a primary results source is cited.
Where should I start after buying one?
Identify the bike, fresh fuel/plug/lines, correct gearbox fluid (Type F is a starting point — verify in your manual), chain care, careful first ride. Then maintenance and the manuals hub before performance parts.
Can I use the site calculators?
Yes for two-stroke singles once the bike is healthy — tools hub. Calculators do not replace Kreidler-specific manual specs.

Manuals & PDFs →