Brisk Silver Racing RR14S Spark Plugs 4 Pack - Ford Focus ST 2013-2018, Focus RS, 2015+ Mustang 2.3L - 1 Step Colder

SKU: RR14S-SET

by: Brisk

  • $35.99
  • On Sale
  • 7 reviews


The Brisk RR14S spark plugs have a colder heat range compared to the stock spark plugs and a non-projected tip for an additional decrease in spark plug firing tip temperature. For modified 1.6L/2.0L, 2.3L & 3.5L EcoBoost. With non-projected tip. These spark plugs also work on the 2017-2019 Ford Raptor 3.5L EcoBoost, and 2014-2019 Ford Fiesta ST.

Spark Plug Heat Range

In identical spark plug types, the difference from one heat range to the next is the ability to remove approximately 70°C to 100°C from the spark plug center electrode and ceramic tip. A projected style spark plug firing tip temperature is increased by about 15°C to 25°C.

Heat range is the measure of how fast the spark plug tip dissipates combustion heat. It must do this in a precise and controlled manner so the spark plug will:

  • Stay cool enough to avoid pre-ignition and/or electrode destruction due to detonation.
  • Run hot enough to burn off combustion deposits that would otherwise collect on the insulator tip and cause fouling that results in misfire.
  • Adapt to specific engine characteristics and widely varying driving/load conditions.

Key Benefits and Applications of Brisk Silver Racing Spark Plugs

• Silver is the best Electric and Heat Conductor - the best material for performance and racing spark plugs
• Superior Ignition Ability Increases Engine Power
• Lower Required Supplied Ignition Voltage
• Good Resistance to Fouling and Easier Starts
• Race Engines and Engines with Hard to Ignite Fuels
• Supercharged / Turbocharged / Nitrous engines
• Excellent for Total Loss Ignition Systems
• Excellent Spark Plug Choice for any Vehicle, Tuned or Modified, even for High Mileage Vehicles and Vehicles With Oil Consumption Problems
• Recommended Gap is .026" ~ .028"
• Approximately 20,000 mile service life


Customer Reviews
5.0 Based on 7 Reviews
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Filter Reviews:
09/13/2021
Spark plugs

New plugs performed perfectly at the track. Everything I expected.

RH
Rob H.
United States United States
10/13/2020
CB
Cody B.
United States United States
09/12/2019
Brisk plugs for focus st

Product was a perfect fit. Car seems to idle smoother and fires right up with zero hesitation.

JS
Josh S.
United States United States
03/17/2018
TM
Tyler M.
United States
01/27/2018
top spedition

spedition from USA to Switzerland in 2 work day. perfect service

AL
Andrea L.
Switzerland
06/15/2016
Brisk racing spark plugs the best

My first experience showed I selected the wrong plug. Once I selected the RR14S and gapped @ .028 with the FRPP tune the car instantly showed a response. Power was already there its just more responsive power

EB
Earl B.
United States
06/15/2016
Brisk racing spark plugs the best

My first experience showed I selected the wrong plug. Once I selected the RR14S and gapped @ .028 with the FRPP tune the car instantly showed a response. Power was already there its just more responsive power

E
Earl
United States