Top sellers

Viewed products


O.S. MAX 21XZ-B V2


New product

In stock

234,96 €

Add to wishlist

More info

The perfect balance between price and performance.

The 21XZ-B Version II delivers ideal performance at a reasonable price. It continues to exceed the expectations of even pro racers, delivering power comparable to the Speed Spec II at a lower price. Upgrades include a lightened cylinder head, improved cooling and a brand new 22B2 single-needle carb for easy tuning. If you're looking for incredible throttle response and the power to conquer off-road, you've found it in the 21XZ-B Version II.

  • Performance that rivals the Speed 21XZ-B Spec II
  • Shares the piston, liner and con rod of the Spec II
  • Low center of gravity
  • Blue anodized head
  • Incredible throttle response
  • Silicon-filled crankshaft with tungsten counter weights

Technical Specifications:

  • Displacement: 3.49cc
  • Carburetor Type: 7mm Slide
  • Material: Aluminium
  • Adjustment Needles: 3
  • Glowplug Type: Turbo
  • Exhaust Position: Rear
  • Fuel Type: 25% (Recommended)
  • Bore: 16.27mm
  • Stroke: 16.8mm
  • Pratical RPM: 3,000-41,500
  • Output: 2.56hp @ 34,000 RPM
  • Weight: 362g



We guarantee repairs to your radio equipment, from Drones, Cars, Helis, Planes or Boats, with its own workshop and specialized personnel. (static, radio control, electronic repair, etc.)

You can count on a service of excellence, with advice of accessories or parts adjusted to your needs and with the guarantee of the quality that our services offer.

We know that not everyone is experienced and often the first steps in radiomodelismo are obscure and difficult, but we are here to help and follow you in the evolution of your knowledge of this fabulous hobby.

Want to evolve your vehicle? Well, you can count on the best advice to do a complete upgrade, in phases or even to add the accessory that you want but do not have enough knowledge to apply it.

Count on us, count on free budgets, clear and without surprises in the end.

Purchased at SVModelismo or another shop, your vehicle is always well treated with our technicians and with a complete workshop.

Click here and bookmark a visit or ask for a free quote!

30 other products in the same category: