XRAY 681002 NT18T 2-Piece Muffler Set - Off-Road Favourite  [XR-681002]

XRAY 681002 NT18T 2-Pc Muffler - Set
Price:
AUD$79.22
Brand:
XRAY
Model:
XR-681002
Condition:
Brand New
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Maximise Track Performance with the XRAY 681002 Nitro Engine

The XRAY 681002 Nitro Engine is built for hobbyists who need consistent output and reliable throttle response across varied track conditions. Its construction supports aggressive tuning and long runs.

Two-Part Muffler and Exhaust Dynamics

The exhaust package for the XRAY 681002 centres on a two-piece muffler layout to balance scavenging and back pressure. Included are the #681201 manifold, the #681401 muffler and the #681851 rubber connector, which together smooth flow and help maintain torque through the rev range.

Precision Construction for Racing Durability

XRAY focuses on precision machining and material choices so the 681002 parts tolerate heat and racing loads. The result is a system that stays stable lap after lap and reduces the need for constant mechanical readjustment.

Specifications

  • Manifold: #681201
  • Muffler: #681401
  • Rubber Connector: #681851

The XRAY 681002 with its 2-piece muffler is a sound option for racers who want repeatable performance and a tuneable exhaust for longer race days.
Remark :
Due to limited stock availability, please notice that some XRAY items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

How should I tune after fitting the muffler?

Start with the baseline needle settings you were using, then make small adjustments to the main needle as you log laps. The two-piece muffler can alter top-end slightly so incremental tuning is recommended.

Are spare connectors available?

The rubber connector #681851 is a wear item; keeping a spare is wise since it can degrade from heat and repeated removal during maintenance.

Can this system handle long moto sessions?

Yes, the parts are designed for extended running, but monitor temperatures and inspect joints regularly to prevent leaks and ensure consistent performance.

What surfaces are best for this engine?

This setup performs well on both smooth track and prepared off-road circuits where engine breathing and exhaust tuning affect acceleration and midrange drive.

How often should I inspect the muffler joints?

Inspect muffler bolts and the rubber connector before every event and after intense runs to catch any loosening, wear, or exhaust leaks early.

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