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AC Motorsport

Brisk LR11SL Spark Plug for Yamaha YZ 125

Brisk
(13 Item(s) In Stock)
29.00 €
200g
Discount on quantity
From246810
Discount8.00%10.00%12.00%14.00%20.00%

Lifespan = 50 races
Semi-projected tip
No indexing
Resistor
Fine wire 1.5mm
Silver central electrode
Cut-back ground electrode

Hexagon Size: 16mm
Thread Length: 19mm
Thread Diameter: 14mm

Spark plugs with silver centre electrode, specially developed by Brisk Racing for 2-stroke racing engines adapted to high thermal load, vibrations and pressures. The open spark gap ensures perfect ignition of the mixture and does not hinder propagation of the flame. 

WARNING:
  • Max. tightening torque: Between 20 Nm and 25 Nm (Excessive tightening = risk of electrode breakage).
  • You may need to check your carburation setting because the combustion is optimized here.
  • Because they are a little longer than a "classic" spark plug, make sure it doesn't touch your piston during assembly (otherwise add a second washer under the spark plug).
  • These spark plugs are only recommended for racing uses.



BENEFITS:
  • Semi-surface discharge with high potential = MORE POWER
  • Discharge at the richest point within a 360-degree perimeter
  • Patented spark plug design - no indexing
  • Integrated and retracted electrode
  • Silver central electrode - Better thermal and electrical conductivity

Brisk Racing spark plugs are designed to maximize the benefits of the high power factory ignition systems used on high performance 2-stroke engines.

The exclusive design of Brisk spark plugs provides maximum spark exposure and unlimited access to the air/fuel ratio. Unlike standard spark plugs with the same thermal properties, the silver centre electrode makes it possible (thanks to its higher thermal conductivity) to use a larger surface area of the insulator tip and hence ensure longer protection against contamination with conductive deposits. This is a must for racing engines where it's essential to maximize combustion for maximum power.



CONVERSION TABLE

TEMPERATURE

COLD





HOT

BRISK

8

10

12

14

15

17

NGK

10

9

8

7

6

5

DENSO

31

27

24

22




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