Based on the world’s first Lambretta engine to smash the 100 BHP barrier, this record-breaking 106 HP engine platform forms the heart of both the WRAITH 421 and MORRIGAN 421. Developed and built by Lambretta‑Lutz, it set a new benchmark in street‑legal performance.

Read more: ScooterLab – Lambretta‑Lutz smashes the 100 bhp barrier

WRAITH 421 – Twin Street Performance

A fast, aggressive street-ready twin. Based on the 106 HP record engine, now tamed for the streets. Smooth yet powerful – ~60 HP and ~50 Nm. Features a unique design, protected as a registered utility model* – exclusive to Lambretta‑Lutz.

Technical Setup:
Engine: Lambretta Twin 421 cc LC, built by Lambretta-Lutz

  • Case: 125/150/175/200 (Uni Block recommended)
  • Crankshaft: 58 x 125 mm (102 mm cylinder spread)
  • Top End: Athena Big Bore  Barrels
  • Power: ~60 HP
  • Torque: ~50 Nm (modified AF Python 8)
  • Carbs: 2 TMX 35 mm, RD Reeds
  • Exhaust: 2in1
  • Fits: 125/150/175/200 blocks



See Dyno Run

For more info, price, and order please use the contact form.


MORRIGAN 421 – Twin Hyper Performance

An epic, high-performance street twin. Based on the 106 HP record engine, this ultimate street killer delivers ~78 HP and ~65 Nm. (With optional NOS: over 100 HP and 95 Nm – not street legal.)

Built for those who demand the ultimate thrill.

Technical Setup:
Engine: Lambretta Twin 421cc LC, built by Lambretta-Lutz

  • Case: GT-based only
  • Crankshaft: 58 x 125mm (102mm cylinder spread)
  • Top End: Athena Big Bore Barrels or Assassin 2
  • Power: ~78HP (~100+HP with NOS, 95+Nm – not street legal)
  • Torque: ~65Nm (modified AF Python 8)
  • Carbs/ NOS Injection: 2 TMX 38mm PJ, VF4 Reeds - NX wet NOS System
  • Exhaust: 2in2

See Dyno Run
For more info, price, and order please use the contact form.

What the YT Community Says:
"Absolute weapon that. Nearly making 600cc power hahahahah love the whole project really enjoyed the engineering"
"It's insane, but I like it!"
"Fantastic. Very angry engine. Scooter power. Lambretta 4 ever. ❤"
"Nothing short of Amazing!!"
"Fantastic result for all your hard work."
"Fantastic my friend, what an achievement! Super well done"

* Registered Utility Model No. 20 2025 002 651 IPC F02B 57/28 – exclusive to Lambretta‑Lutz.

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