EBC Carburetor Mainjet Selection Kits Information Tables

Search The Site - Enter Keyword in Box Below	EBC Brakes

SELECT LANGUAGE

Back To Carburator Index

Carburetor Mainjet Selection Kits

EBC Brakes sister Company ABAX Engineering is the place to shop for jets for motorcycle carburetors whether you want a carb jet for an amal carburetor or a keihin carburetor we have all the sizes and shapes you need.

First choose the style of carburetor jet you are looking for and then select from our comprehensive carburetor jet lists below. The most popular carburetor jets are for the mikuni carb and the keihin carburetors where there are choices of hexagon or slotted style carburetor jets for both.

The Mikuni carb is popular on most street sport bikes and whereas original mikuni carburetor parts cost far more, the EBC range of carburetor jets by ABAX Engineering are precision brass mainjets and are completely interchangeable with mikuni parts themselves. Similarly parts for the keihin carb range are again precise flow rate gauged and clearly market carburetor jets that will intrechange directly with the keihin carb parts. Motorcycle carburetors and atv carburetors have given way somewhat to injection systems but for off road applications the motocross and atv market still strongly prefer carburetors for their fuel systems.

UK (Europe & Asia) & USA CHART

SJK36	HJK27A	HJK27B	HJK36	KJK30	KJK30	KJK36	CRK32A	CRK32B	CRK30
USA&UK	USA	USA	UK	USA	UK	UK	USA	USA	USA&UK
SJ Prefix	HJ Prefix	HJ Prefix	HJ Prefix	KJ Prefix	KJ Prefix	KJ Prefix	CR Prefix	CR Prefix	CR Prefix
x4	x2	x2	x2	x4	x4	x4	x2	x2	x2
4pcs of each jet size 72.5thru 160	2pcs of each jet size 70thru 230	2pcs of each jet size 240thru 500	2pcs of each jet size 70thru 420	4pcs of each jet size 80thru 190	4pcs of each jet size 80thru 190	4pcs of each jet size 72.5thru 160	2pcs of each jet size 80thru 158	2pcs of each jet size 160thru 238	2pcs of each jet size 80thru 225
72.5	70	240	70	80	80	72.5	80	160	80
75	80	250	80	82.5	82.5	75	82	162	85
77.5	90	260	90	85	85	77.5	85	165	90
80	100	270	100	87.5	87.5	80	88	168	95
82.5	105	280	110	90	90	82.5	90	170	100
85	110	290	120	92.5	92.5	85	92	172	105
87.5	115	300	130	95	95	87.5	95	175	110
90	120	310	140	97.5	97.5	90	98	178	115
92.5	125	320	150	100	100	92.5	100	180	120
95	130	330	160	102.5	102.5	95	102	182	125
97.5	135	340	170	105	105	97.5	105	185	130
100	140	350	180	107.5	107.5	100	108	188	135
102.5	145	360	190	110	110	102.5	110	190	140
105	150	370	200	112.5	112.5	105	112	192	145
107.5	155	380	210	115	115	107.5	115	195	150
110	160	390	220	117.5	117.5	110	118	198	155
112.5	165	400	230	120	120	112.5	120	200	160
115	170	410	240	122.5	122.5	115	122	202	165
117.5	175	420	250	125	125	117.5	125	205	170
120	180	430	260	127.5	127.5	120	128	208	175
122.5	185	440	270	130	130	122.5	130	210	180
125	190	450	280	132.5	132.5	125	132	212	185
127.5	195	460	290	135	135	127.5	135	215	190
130	200	470	300	137.5	137.5	130	138	218	195
132.5	210	480	310	140	140	132.5	140	220	200
135	220	490	320	142.5	145	135	142	222	205
137.5	230	500	330	145	150	137.5	145	225	210
140			340	147.5	160	140	148	228	215
142.5			350	150	170	142.5	150	230	220
145			360	152.5	190	145	152	232	225
147.5			370	160		147.5	155	235
150			380	170		150	158	238
152.5			390	190		152.5
155			400			155
157.5			410			157.5
160			420			160

USA ONLY

SJK36	HJK27A	HJK27B	KJK30	CRK32A	CRK32B	CRK30
USA&UK	USA	USA	USA	USA	USA	USA&UK
SJ Prefix	HJ Prefix	HJ Prefix	KJ Prefix	CR Prefix	CR Prefix	CR Prefix
x4	x2	x2	x4	x2	x2	x2
4pcs of each jet size 72.5thru 160	2pcs of each jet size 70thru 230	2pcs of each jet size 240thru 500	4pcs of each jet size 80thru 190	2pcs of each jet size 80thru 158	2pcs of each jet size 160thru 238	2pcs of each jet size 80thru 225
72.5	70	240	80	80	160	80
75	80	250	82.5	82	162	85
77.5	90	260	85	85	165	90
80	100	270	87.5	88	168	95
82.5	105	280	90	90	170	100
85	110	290	92.5	92	172	105
87.5	115	300	95	95	175	110
90	120	310	97.5	98	178	115
92.5	125	320	100	100	180	120
95	130	330	102.5	102	182	125
97.5	135	340	105	105	185	130
100	140	350	107.5	108	188	135
102.5	145	360	110	110	190	140
105	150	370	112.5	112	192	145
107.5	155	380	115	115	195	150
110	160	390	117.5	118	198	155
112.5	165	400	120	120	200	160
115	170	410	122.5	122	202	165
117.5	175	420	125	125	205	170
120	180	430	127.5	128	208	175
122.5	185	440	130	130	210	180
125	190	450	132.5	132	212	185
127.5	195	460	135	135	215	190
130	200	470	137.5	138	218	195
132.5	210	480	140	140	220	200
135	220	490	142.5	142	222	205
137.5	230	500	145	145	225	210
140			147.5	148	228	215
142.5			150	150	230	220
145			152.5	152	232	225
147.5			160	155	235
150			170	158	238
152.5			190
155
157.5
160

UK (Europe & Asia)

SJK36	HJK36	KJK30	KJK36	CRK30
USA&UK	UK	UK	UK	USA&UK
SJ Prefix	HJ Prefix	KJ Prefix	KJ Prefix	CR Prefix
x4	x2	x4	x4	x2
4pcs of each jet size 72.5thru 160	2pcs of each jet size 70thru 420	4pcs of each jet size 80thru 190	4pcs of each jet size 72.5thru 160	2pcs of each jet size 80thru 225
72.5	70	80	72.5	80
75	80	82.5	75	85
77.5	90	85	77.5	90
80	100	87.5	80	95
82.5	110	90	82.5	100
85	120	92.5	85	105
87.5	130	95	87.5	110
90	140	97.5	90	115
92.5	150	100	92.5	120
95	160	102.5	95	125
97.5	170	105	97.5	130
100	180	107.5	100	135
102.5	190	110	102.5	140
105	200	112.5	105	145
107.5	210	115	107.5	150
110	220	117.5	110	155
112.5	230	120	112.5	160
115	240	122.5	115	165
117.5	250	125	117.5	170
120	260	127.5	120	175
122.5	270	130	122.5	180
125	280	132.5	125	185
127.5	290	135	127.5	190
130	300	137.5	130	195
132.5	310	140	132.5	200
135	320	145	135	205
137.5	330	150	137.5	210
140	340	160	140	215
142.5	350	170	142.5	220
145	360	190	145	225
147.5	370		147.5
150	380		150
152.5	390		152.5
155	400		155
157.5	410		157.5
160	420		160

If you wish to buy a mainjet for your motorcycle or ATV here is how to do it.

1) Decide the type of carburetor you have Keihin or Mikuni

2) Then determine what type of jets you have Hexagon mainjet or slotted round main jet. As a guide most street bikes use slotted jets and most off road Motorcycles and ATV use Hex style mainjets.

3) Read off your current jet the size which will be engraved or stamped on the side or end of the jet.

4) Then decide whether you are seeking to get MORE fuel which needs a larger mainjet or less fuel which needs a smaller jet and order the appropriate jet. This is a process of tuning and we suggest you buy 3 or 4 jets in single steps up or down from where you start so as to be able to complete the tuning process without having to run backwards and forward to your dealer for a tiny carburetor jet part.

Remember the carburetor mainjet only determines fuel from mid range to full throttle openings. Before that the slide and pilot or needle jet will determine the mixture and how the bike runs. There are several useful articles written by others that offer some help here, is one of them. Click Here To See PDF!

A popular way to check main jet requirements is to get the bike warm, run it for a period that would ensure it was on the mainjet and not on part throttle and then kill the engine and coast to a standstill and check the plug colour. This is a professional process and MUST be done in a safe environment, away from traffic and as they say "DONT TRY THIS AT HOME"

Check out your nearest Dealer here

Buy online in UK and Europe here

Buy online in the USA here

Back To Carburator Index

Go Kart/Shifter Brakes

Industrial Brakes

Railway Brakes

Military Brakes