OS Engines - Item No. OSMG2053
5 out of 5 Customer Rating

21XZ-B V2 ABC VII 1/8 Offroad .21 Buggy Engine

RC Club points earned on this item shown at checkout.
  • High performance crankshaft has silicone filled intake passage and Tungsten counterweights
  • Lightening holes in cylinder head reduce overall weight
  • 22B2 single needle slide valve carburetor
  • ABC piston and liner construction "A"luminum piston fitted to a "B"rass cylinder liner that is "C"hrome plated
  • Optimized power band
  • (1) O.S. 21XZ-B V2 Off-Road Engine with 22B2 Carburetor
  • Exhaust Gasket
  • P3 Turbo Ultra Hot Glow Plug
  • Yellow 7mm Carb Reducer
  • (2) Dust caps
  • Product manual
  • Fuel: 10-30% nitro content, 20% recommended for break-in
  • Exhaust System: Depending on vehicle
  • Glow starter, fuel tubing and track equipment
21XZ-B V2 ABC VII 1/8 Offroad .21 Buggy Engine

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.

O.S. Two Year Limited Warranty
  • Performance that rivals the Speed 21XZ-B Spec II
  • Shares the piston, liner and con rod of the Spec II
  • Easy-tune 2282 single-needle carb
  • Optimized power band
  • Silicon-filled crankshaft with tungsten counter weights
  • Low center of gravity
  • Blue anodized head
  • Incredible throttle response

Product Specs

Crankshaft Threads
0.641 in (16.27 mm)
Crankshaft Type
Power Type
Plug Type
P3 Turbo Ultra Hot
0.661 in (16.8 mm)
Product Width
1.77 in (45 mm) at mounting tabs
Total Weight
12.77 oz (362 g)
0.213 cu in (3.49 cc)
Product Length
2.5 in (64.5 mm) from backplate to drive hub
Part Type
Engine Parts
Product Height
4 in (102.1 mm)
RPM Range
4,000 - 42,000 rpm