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BRISK
SPARK PLUGS
Simply Reliable
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We have been using
Brisk spark plugs for over a decade as they are original equipment
fitted to some of our motorcycles.
In the past, when they eventually needed changing we swapped
them for easily available alternatives from well know manufacturers.
Strangely the replacement plugs did not last as long and did
not run as well.
We contacted Brisk and are now please to offer a range of plugs
to suit many traditional motorcycles.
We urge you to try them and find out just how good they are.
Made in Europe, Established
1935
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N-Series.
M14 x 1.25 short reach.
Y indicates a projected insulator
R indicates internal resistor |
Brisk
Spark Plug |
NGK
cross reference |
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N17C |
B5HS |
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N15C |
B6HS |
NR15C |
BR6HS |
N15YC |
BP6HS |
NR15YC |
BPR6HS |
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N14C |
B7HS
+ B8HS |
NR14C |
BR7HS
+ BR8HS |
N14YC |
BP7HS
+ BP8HS |
NR14YC |
BPR7HS
+ BPR8HS |
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N12C |
B9HS |
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L-Series.
M14 x 1.25 long reach.
Y indicates a projected insulator
R indicates internal resistor |
Brisk
Spark Plug |
NGK
cross reference |
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L17C |
B5ES |
LR17YC |
BPR5ES |
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L15C |
B6ES |
LR15C |
BR6ES |
L15YC |
BP6ES |
LR15YC |
BPR6ES |
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L14C |
B7ES
+ B8ES |
LR14C |
BR7ES
+ BR8ES |
L14YC |
BP7ES
+ BP8ES |
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LR12C |
BR9ES |
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N-Series.
M14 x 1.25 short reach.
Y indicates a projected insulator
R indicates internal resistor |
Brisk
Spark Plug |
Champion
cross reference |
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N17C |
L86C
+ L90C |
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N15C |
L82C
+ L86C** |
NR15C |
RL82C
+ RL86C** |
N15YC |
L87YC |
NR15YC |
RL87YC |
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N14C |
L78C
+ L82C** |
NR14C |
RL78C |
N14YC |
L78YC
+ L82YC |
NR14YC |
RL82YC |
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Note
** = alternative for hard or summer use
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L-Series.
M14 x 1.25 long reach.
Y indicates a projected insulator
R indicates internal resistor |
Brisk
Spark Plug |
Champion
cross reference |
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L17C |
N5
+ N5C |
LR17YC |
RN11YC
+ RN12YC |
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L15C |
N4
+ N4C + N5C** |
LR15C |
RN4C |
L15YC |
N9YC
+ N10YC |
LR15YC |
RN9YC
+ RN10YC |
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L14C |
N2C
+ N3C |
LR14C |
RN2C
+ RN3C |
L14YC |
N7YC
+ N8YC |
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LR12C |
RN1C |
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Heat
Range.
Brisk spark plugs have a very wide heat range,
there is no 13 or 16 so they cover most motorcycle needs
with just 4 different heat ranges.
This wide heat range is very useful for older type engines
running carburetors.
Brisk plugs recover well from over rich mixture due to excessive
choke of flooding on start up.
They continue to function well even on a feathered throttle
at speed when a carburettor may be a little lean.
They will not cure incorrect carb set up, but they tolerate
small variations in mixture very well indeed.
We find this wide heat range also helps them stay cleaner
when fitted to classic 2-strokes. |
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Reliable
Spark Plugs at an Affordable Price
All
spark plugs are £3.00 each
P&P
charge for up to 4 spark plugs is £2.40
P&P
charge for 5 to 8 spark plugs is £3.96
P&P
charge for 9 to 12 spark plugs is £5.40
All
prices include VAT |
Spark plugs are
posted 1st class post with up to 4 plugs per pack
Example you order 6 spark plugs
6 spark plugs at £3.00 is £18.00 plus £3.96
P&P making the total £21.96
These will arrive in two packs each containing 3 spark plugs
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Fitment
Guide for just a few motorcycles.
This is a guide only, please double check original specifications
in your owners manual or cross reference against the NGK recommendation.
NOTE - If you require
resistor plugs simply insert the letter R after the L or N |
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Make
and Model |
Brisk
Plug |
| AJS
OHV most OHV models taking 14 mm short reach plugs |
N15C |
| Ariel
Leader/Arrow |
L14C |
| BMW
R80 R80RS R80RT etc + late R100 mono shock |
L15YC |
| BMW
R100 R100GS R100RT etc |
L14YC |
| BSA
Bantam D1 - D7 short reach |
N15C |
| BSA
Bantam D10 - D14 long reach |
L15C |
| BSA
A7 and A10 GF short reach plugs |
N14C |
| BSA
A10, A50, A65 long reach plug |
L14C |
| Harley Davidson
1340 Carburetor bikes |
LR17YC |
| Jawa - CZ
most models to 2010 |
N14C |
| Jawa 350
twins from 2010 (electric start models) |
NR15C |
| Matchless
most 1950 to 1964 alloy head non competition |
L15C |
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| Make
and Model |
Brisk
Plug |
| Moto Guzzi
V50 small block twins |
L14C |
| Moto Guzzi
T3-G5 Big twins with carburetors |
L15YC |
| MZ
250 points models |
N14C |
| MZ
250 electronic ignition |
NR14C |
| Royal
Enfield (India) 350 |
N14C |
| Royal
Enfield (India) 500 points |
L14C |
| Royal
Enfield (India) 500 fitted with electronic ignition |
LR14C |
| Royal
Enfield (India) Electra X 500 |
LR12C |
| Triumph
T120 650cc |
L14C |
| Triumph
T140 750cc |
L15C |
| Ural 650
OHV |
NR15YC |
| Ural 750
OHC carburetor + EFI after 2019 |
NR14YC |
| Ural 750
OHC EFI MK1 from 2014 to 2018 |
NR15YC |
| Vespa
125E |
NR14C |
| Villiers
engines using 14mm short reach non competition |
N15C |
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Internal
Resister - Suppressor.
Resistors are fitted to spark plugs to reduce electrical
noise, they act as a suppressor.
However many spark plug caps already have suppressors fitted,
so you may not need both.
Our advice is as follows.
Bikes running magneto ignition should not have suppressor
plugs or caps fitted, unless you are constantly annoying
the neighbours, in which case maybe consider using a suppressor
plug or cap.
Bikes running coil ignition either with points or electronic
ignition should use either a suppressor plug or cap. A good
coil will produce so much energy that the strength of the
spark at the plug will be almost unchanged by the suppressor.
You will not be able to tell the difference.
Bikes fitted with high power ignition systems and sensitive
modern electronic dash boards may need both suppressor plugs
and caps together.
You should always refer to the original manufacturers recommendations
where possible, but note that over time things get changed.
For example a manufacturer may specify suppressor plugs
because the original motorcycle did not have suppressor
caps, but these may have been changed to suppressor caps
by a previous owner.
Brisk use the letter R to indicate it is a suppressed (resistor)
plug. N15C has no suppressor, but NR15C has a suppressor |
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Fitment
Guide for just a few cars.
This is a guide only, please double check original specifications
in your owners manual or cross reference against the NGK recommendation. |
| Make
and Model |
Brisk
Plug |
| Alfa
Romeo Alfasud 1.3 + 1.5 |
L14C |
| Austin
Allegro all engines |
L15YC |
| Austin
Mini 850, 1000, 1275 |
L15YC |
| Citroen
2CV 602cc |
N15C |
| Fiat
126 air cooled |
NR14YC |
| FSO
125P + Polonez |
L15YC |
| Jaguar
XJ6 2.8 Series 1 |
L14YC |
| Lada 1200,
1300, 1500 |
LR17YC |
| MGB 1.8
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L15YC |
| Reliant
Robin 750 + 850 pre 1996 |
LR17YC |
| Renault
4 750, 850, 1100 |
N15YC |
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| Make
and Model |
Brisk
Plug |
| Rover P6
2000, 2200 |
L15YC |
| Saab
99 Turbo |
L14YC |
| Skoda
Estelle 105, 120, 130 |
N15YC |
| Trabant
601 2-stroke |
NR14C |
| Triumph
Spitfire 1300 |
L15YC |
| Vauxhall
Viva HB, HC, 1200, 1300 |
L15YC |
| VW Beetle
air cooled to 1978 |
N17C |
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If you require
resistor plugs simply insert the letter R after the L or N
In most cases the small additional
resistance will not weaken the spark.
If your vehicle
is not listed but you know the recommended NGK plug
please use the cross reference near the top of this page |
Range
of 12 mm and 10 mm plugs. We can help with exact cross references
if you phone or email us. |
| Brisk
Spark Plug |
Description |
NGK
cross reference |
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| AR12C |
M10
x 1.00 pitch. 19mm thread length with suppressor and standard
electrode projection |
CR8
heat range long thread |
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| NAR14YC |
M10
x 1.00 pitch. 12.7mm thread length with suppressor and extended
electrode projection |
CR7
heat range short thread |
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| B12C |
M12
x 1.25 pitch. 19mm thread length with no suppressor and standard
electrode projection |
D8
heat range long thread |
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BBR12C |
M12
x 1.25 pitch 19mm thread length with suppressor and standard
electrode projection |
DR8
heat range long thread |
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| B14C |
M12
x 1.25 pitch. 19mm thread length with no suppressor and standard
electrode projection |
D7
heat range long thread |
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| Reducer.
M18 x 1.5 down to M14 x 1.25 |
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Brisk Spark Plug
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CHAMPION |
NGK
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| Reducer
+ L17YC |
D15Y |
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| Reducer
+ L17C |
D14 |
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| Reducer
+ L15C |
D9
+D10 |
A6 |
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| Reducer
+ L14C |
D6 |
A8 |
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Brisk reducers
are supplied complete
with a crush washer for a perfect seal
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Notes
about the Brisk reducer.
M18 spark plugs are getting very hard to find, so this
reducer may help some classic vehicle owners, but not all. The
long reach (L-series) Brisk plugs sit down inside the reducer,
even so the overall height of the L-series plug plus the reducer
will be higher than the original M18 plug. The measurement from
the seat where the reducer seals against the cylinder head to
the very top of the spark plug is 64 mm. Please check you have
enough clearance before ordering.
Once fitted they stay in the engine and just the spark plug is
changed at service, you do not need to buy a new reducer each
time you change the spark plug.
Brisk reducers are supplied with a crush washer and will not fit
the vehicles originally designed for the very rare M18 taper seat
plugs.
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Reducer
with no spark plug - £4.80 each
Reducer plus spark plug - £7.20 each
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KTC
Silicon HT Cap.
No internal resistance, so suitable for older bikes running
magneto ignition. Often used on points and coil bikes when
used with resistor spark plugs. High quality material and
forms an excellent water tight seal between the can and
plug. |
| Part
- F24410 |
£3.60 |
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Garden
Machinery Plug.
Great wide heat range short dumpy plug with M14 thread and
9.5 mm long thread. Direct replacement for the Briggs and
Stratton BS19LMR, NGK BR2LM, Champion RJ19LMT and RJ19LMW
to name a few. Fits a wide range of lawn mowers. |
| Part
- JR19 |
£3.00 |
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The not very
small print. Cross references are supplied for information only, we
have trawled the internet and spent many hours cross referencing plugs
back and forth, looking up vehicles and taking notes of various recommendations
in owners forums. However owners make changes to vehicles over time,
for example raising the compression, skimming heads or fitting different
cams. Also vehicles are driven differently, one owner may potter about
and require a plug that gets up to temperature quickly (Hotter Plug)
where as another owner may spend all of their time at higher speeds
doing longer journeys so would benefit from a colder plug. When ever
you change plugs we would always advise to have a quick look at it after
a trip of 15 to 20 miles. If it is spotlessly clean with no deposits
at all even where the base of the thread is touching the head, you should
move to one grade colder (from L15C to L14C for example). If the plug
is dry and sooty, even at the hottest part of he electrode tip you should
consider riding harder, or changing a plug one grade hotter (from N14C
to N15C for example. F2 Motorcycles Ltd are not responsible for any
damage caused by incorrect plug selection.
We are always happy to learn
from real life experiences and keen to hear your feed back, so if you
see any plug reference for a vehicle you own that you feel may be incorrect
please let us know. |
Order
by phoning 01945 410165 - 2pm to 5pm Tuesday to Saturday
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