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

O.S. Engine OS Speed 21XZ-GT w/T-2060SC Combo Set
Price:
£332.21
Brand:
O.S. Engine
Model:
OS-1AS01
Condition:
Brand New
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Engine Insight: O.S. Engine OS Speed 21XZ-GT

Racers looking for steady, tweakable power will find the O.S. Engine OS Speed 21XZ-GT a focused choice. It pairs solid construction with a design that supports fine adjustment and routine servicing.

Heritage and On-Track Reliability

The OS Speed 21XZ-GT reflects O.S. Engine's emphasis on race-capable products. It delivers consistent output across sessions, helping drivers maintain predictable lap times and easier setup dialing.

Practical Tuning Hints

Work methodically with needle settings and monitor temperature and throttle response when tuning the 21XZ-GT. Installing the T-2060SC exhaust can improve the usable power band and give smoother throttle transitions.

Assessment Versus Other Brands

In head-to-head comparisons, the 21XZ-GT often appeals for its easier upkeep and steady long-term performance, even when rivals deliver similar top-end figures.

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 a sensible pick for competitors seeking a reliable, tuneable powerplant. Its workmanship and ease of maintenance reward regular track use.

Use short, moderate runs with controlled throttle inputs, allow cooling periods, and gradually increase load to seat components without overheating.
The 21XZ-GT's balance of power and reliability makes it adaptable to both sprint and longer events, provided fuel and cooling are managed correctly.
Track running temperatures, listen for unusual noises, and check for smoking or oil leaks; regular inspections will catch issues early and extend service life.
Tuning requires patience but is straightforward; start with small adjustments, document settings, and tune for conditions rather than chasing aggressive mixtures.

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