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featured products

  Pick the model year of your bike, then scroll to the model.

2009
2001
1993
2009
MODEL MAIN PILOT NEEDLE POS SCREW POWER SLIDE NOZZLE LEAK OTHER
HONDA  
CR 85R
142
45
NFSF
3
1 1/2
Pro Circuit
142
42
NFSF
4
CRF 150R
138
38
NMQS
3
2 1/2
1.5
58
Pro Circuit
138
45
NMQS
3
2 1/2
58
CRF 250R
188
42
NMGU
3
1 1/2
70
Pro Circuit
172
42
NMGU
3
2   
48
CRF 250 X
130
40
NCYU
2
2   
65
Pro Circuit
158
42
NCYS
4
2 1/4
55
CRF 450R
178
42
NJYR
3
1 3/4
50
Pro Circuit
178
42
NJYR
3
2 1/4
50
CRF 450X
145
45
NCVU
2
2 1/2
70
Pro Circuit
155
45
NCYS
3
2 1/4
Needle # 16204-MEN-671
70
YAMAHA
YZ 85
138
45
NBKF  
2
2 3/8
Pro Circuit
135
42
NBKF  
2
2   
YZ 125
410
40
6CHY5-80
4
2 1/4
4.0
Pro Circuit
410
35
6CHY5-80
3
1 3/4
4.0
YZ 250
178
50
N3EW
2
1   
50
7.0
Pro Circuit
175
48
N3EW
2
1   
50
7.0
YZ 250F
178
42
NFPR
5
2 3/8
70
Pro Circuit
175
42
NFPN
4
2   
60
YZ 450F
160
45
NFLR
3
1 1/4
55
Pro Circuit
160
42
NFLP
5
2 1/2
50
WR 250F
4   
Pro Circuit
WR 450F
162
45
NFNT
fix
2 1/4
60
Pro Circuit
SUZUKI
RM 85
125
50
NAAH  
2
2   
Pro Circuit
125
48
NAAH  
2
2   
RM 250
168
48
NECJ
3
1   
45
7.0
Pro Circuit
168
48
NECJ
3
1 1/2
48
7.0
RMZ 250
162
45
NLCT
3
2 1/4
1.5
40
Pro Circuit
162
45
NLCT
4
2 1/4
40
RMZ 450
Pro Circuit
KAWASAKI
KX 65
190
25
5GSP68  
3
1 1/2
1.5
O-0
Pro Circuit
200
27.5
5GSP68  
2
1 1/2
1.5
O-0
KX 85
140
45
NAPE  
3
1 3/8
3.5
Pro Circuit
138
42
NAPE  
2
1 3/8
3.5
KX 100
138
45
NAPF  
4
1 3/8
3.5
Pro Circuit
138
42
NAPF  
2
1 3/8
3.5
KX 250F
182
40
NHJT
4
1 3/4
55
Pro Circuit
170
42
NCYS
3
2 1/2
50
KX 450F
175
42
NCVR
4
1 3/4
70
Pro Circuit
175
42
NCVR
4
2   
55
KLX 450
145
45
NLZU
Fixed
1 3/4
50
Pro Circuit
155
40
NCYN
1
2   
remove snorkel
50
KTM
KTM 65 SX
200
25
4
1 1/2
Pro Circuit
220
32.5
4
1 1/2
KTM 250F
175
40
OBETP
5
1 1/4
1.5
Pro Circuit
178
40
OBETP
4
2
1.5
wire acc pump

 

2008                    
MODEL MAIN PILOT NEEDLE POS SCREW POWER SLIDE NOZZLE LEAK OTHER
HONDA                    
CR 85 142 45 NFSF 3 1 1/2          
Pro Circuit 142 42 NFSF 4            
CRF 150 138 38 NMQS 3 2 1/2   1.5   58  
Pro Circuit                    
CRF 250 188 42 NMGU 3 1 1/2       70  
Pro Circuit                    
CRF 250 X 130 40 NCYU 2 2       65  
                     
CRF 450 178 42 NJYR 3 1 3/4       50  
Pro Circuit        
CRF 450X 145 45 NCVU 2 2 1/2       70  
Pro Circuit 155 45 NCYS 3 2 1/4 Needle # 16204-MEN-671     70  
YAMAHA                    
YZ 85 138 45 NBKF 2 2 3/8          
Pro Circuit 135 42 NBKF 2 2          
YZ 125 410 40 6CHY5-80 4 2 1/4   4.0      
Pro Circuit 410 35 6CHY5-80 3 1 3/4   4.0      
YZ 250 178 50 N3EW 2 1 50 7.0      
Pro Circuit 175 48 N3EW 2 1 50 7.0      
YZ 250F 178 42 NFPR 5 2 3/8       70  
Pro Circuit 175 42 NFPN 4 2       60  
YZ 450F 160 45 NFLR 3 1 1/4       55  
Pro Circuit 160 42 NFLP 5 2 1/2       50  
WR 250F         4          
Pro Circuit                    
WR 450F 162 45 NFNT fix 2 1/4       60  
Pro Circuit                    
SUZUKI                    
RM 85 125 50 NAAH 2 2          
Pro Circuit 125 48 NAAH 2 2          
RM 250 168 48 NECJ 3 1 45 7.0      
Pro Circuit 168 48 NECJ 3 1 1/2 48 7.0      
RMZ 250 162 45 NLCT 3 2 1/4   1.5   40  
Pro Circuit 162 45 NLCT 4 2 1/4       40  
RMZ 450                    
Pro Circuit                    
KAWASAKI                    
KX 65 190 25 5GSP68 3 1 1/2   1.5 O-0    
Pro Circuit 200