O.S. Engine OS Speed 21XZ-GT with T-2060SC Combo Set - Track Tuned  [OS-1AS01]

O.S. Engine OS Speed 21XZ-GT w/T-2060SC Combo Set
Price:
CAD$614.20
Brand:
O.S. Engine
Model:
OS-1AS01
Condition:
Brand New
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Performance Focus: O.S. Engine OS Speed 21XZ-GT

RC racers chasing consistent lap times will appreciate the O.S. Engine OS Speed 21XZ-GT for its reliable construction and race-oriented design. This unit blends precision machining with practical durability to suit serious club and regional competition.

Pro Racing Heritage and Build Quality

The OS Speed 21XZ-GT shows why O.S. Engine has a strong reputation among racers. Built to last under frequent use, the engine gives steady power delivery across long running sessions, making it suitable for both newcomers learning race setup and experienced drivers refining pace.

Tuning Advice for Race Conditions

Maximise the 21XZ-GT by focusing on careful needle adjustments and incremental changes to carb settings. The engine responds well to precise tuning, and pairing it with the T-2060SC pipe improves midrange punch and throttle response for overtaking on tight tracks.

How It Stacks Up Against Rivals

Compared with other engines in the same category, the OS Speed 21XZ-GT is often chosen for its straightforward maintenance and long service life. While competitors may match peak output, the 21XZ-GT stands out for consistent performance over many race weekends.

Specifications

  • Displacement: 3.49 cc
  • Bore: 16.08 mm
  • Stroke: 16.80 mm
  • Practical RPM Range: 4,000 - 42,000 RPM
  • Weight: 350 g

The O.S. Engine OS Speed 21XZ-GT is built for racers who prioritise dependable power and tuning flexibility. Its robust performance and serviceability make it a practical upgrade for competitive vehicles.

Start with a baseline needle setting recommended by O.S., then tune incremental changes while logging temperature and throttle response. Proper break-in and fuel choice are key to predictable performance.
Yes, the T-2060SC helps broaden the usable power band and sharpens midrange response, which can aid acceleration out of corners.
Inspect and clean after each intense running day, check for play in moving parts, and replace gaskets or bearings as signs of wear appear to keep peak reliability.
A balanced nitro mix in the 20 to 30 percent range is commonly used to combine power and engine longevity; adjust based on track conditions and engine temperature readings.

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