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4.5 out of 5 Customer Rating

O.S. Speed 21ZX-B Spec II Ty Tessman 110% Engine

Item No. OSMG2037
Brand Logo
4.5 out of 5 Customer Rating

O.S. Speed 21ZX-B Spec II Ty Tessman 110% Engine

Item No. OSMG2037
$499.99 Price reduced from $799.99 to
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Product Details

O.S. Engine Logo

Key Features

  • The 7 mm venturi insert boosts power while reducing fuel consumption
  • The 4 mm lower cooling head lowers overall center of gravity for improved handling
  • Optional T-2090SC exhaust pipe with 90 mm manifold offers a wide variety of tuning options for truggy racers (T-2090SC is included with OSMG2036)
Needed to Complete
  • 20%-30% Nitro-methane fuel
  • Fuel Filter
  • Glowplug Igniter with Integrated Battery and Leads
  • Starter Box
  • Fuel Pump
  • Assorted Tools
What's in the Box?
  • (1) Speed 21ZX-B Spec II Ty Tessman 110% Engine
  • (1) Turbo Plug
  • (1) Collet
  • Crankshaft Comes Filled with Silicone
  • Decals
  • Manual

Overview

The Speed 21XZ-B Spec. II Ty 110% long stroke nitro engine continues the O.S. Speed legacy, with improvements that paved the way for Ty to take first place in the Nitro Truggy division at the ROAR Fuel Off-Road National Championships. The engine is available alone, or as part of a set with a T-2090SC exhaust pipe and manifold that offers lots of tuning options for racers. Get yours today and see just how much of a difference it makes in your buggy or truggy!

Video Overview

Product Specifications

Specs

Bore 0.64 in (16.3 mm)
Carb Type Slide valve w/7mm reducer
Crankshaft Threads UNF1/4-28
Cylinders Single
Displacement 0.213 cu in (3.49 cc)
Engine (Only) Weight 12.45 oz (353g)
Power Type Glow
HP 2.65 PS, 2.61 HP @ 34,000 rpm
Plug Type P3 Turbo Ultra Hot Glow Plug
Product Height 3.3 in (83 mm)
Product Length 3.70 in (94 mm)
Product Width 1.77 in (45 mm) at mounting tabs
Recommended Fuel 10-30% nitro content fuel, 20% recommended for break-in
RPM Range 4,000 - 42,000 rpm
Stroke 0.66 in (16.8 mm)
Total Weight 12.45 oz (353 g)