Main Jets for Keihin Carburettor

Starting at £5.49

Part Number
99101-357-***
Grouped product items
Product Name Price Qty
98 Main Jet for Keihin
0 in stock - Available to order
£5.49
100 Main Jet for Keihin
0 in stock - Available to order
£5.49
105 Main Jet for Keihin
0 in stock - Available to order
£5.49
108 Main Jet for Keihin
0 in stock - Available to order
£5.49
110 Main Jet for Keihin
4 in stock
£5.49
112 Main Jet for Keihin
8 in stock
£5.49
115 Main Jet for Keihin
4 in stock
£5.49
118 Main Jet for Keihin
8 in stock
£5.49
120 Main Jet for Keihin
3 in stock
£5.49
122 Main Jet for Keihin
4 in stock
£5.49
125 Main Jet for Keihin
1 in stock
£7.25
128 Main Jet for Keihin
2 in stock
£5.49
130 Main Jet for Keihin
2 in stock
£5.49
135 Main Jet for Keihin
1 in stock
£5.49
140 Main Jet for Keihin
1 in stock
£5.49
145 Main Jet for Keihin
0 in stock - Available to order
£5.49
148 Main Jet for Keihin
2 in stock
£5.49
150 Main Jet for Keihin
0 in stock - Available to order
£5.49
152 Main Jet for Keihin
0 in stock - Available to order
£5.49
155 Main Jet for Keihin
0 in stock - Available to order
£5.49
102 Main Jet for Keihin
0 in stock - Available to order
£5.49
165 Main Jet for Keihin
0 in stock - Available to order
£5.49
168 Main Jet for Keihin
1 in stock
£5.49
190 Main Jet for Keihin
0 in stock - Available to order
£5.49
195 Main Jet for Keihin
0 in stock - Available to order
£5.49
200 Main Jet for Keihin
0 in stock - Available to order
£5.49
205 Main Jet for Keihin
0 in stock - Available to order
£5.49

The Keihin Main Jet mainly changes the mixture on full throttle openings but changing the size of the jet also affects the mixture throughout the the full throttle range.

The most popular size main jet for trials bikes in the UK is a 125, warmer climates or higher altitudes have less oxygen in the air so require smaller jets.

Fits CR, FCR, PJ, PWK, PWM, PE, PD Keihin Carbs.

6mm Hex head
M5 x 0.8 Thread
16.5mm Length

The number of the jet indicates the size of the hole (highest is the largest/richest). Too rich a mixture will limit the maximum engine speed, too lean a mixture will cause seizure so it is often best to stay slightly on the too rich side. Part numbers:

SizeKeihin Part NoSherco Part NoBeta Part No
105 99101-357-105   1642301 000
108 99101-357-108   1642303 000
110 99101-357-110   1642305 000
112 99101-357-112   1642302 000
115 99101-357-115 1402 1642306 000
118 99101-357-118 1352 1642304 000
120 99101-357-120 1353 1642307 000
122 99101-357-122 1248 1642308 000
125 99101-357-125 1247 1642309 000
128 99101-357-128   1642310 000
130 99101-357-130   1642311 000
135 99101-357-135    
140 99101-357-140    
145 99101-357-145    
148 99101-357-148    
150 99101-357-150    
152 99101-357-152    
165 99101-357-165    
168 99101-357-168    
190 99101-357-190    
195 99101-357-195    
200 99101-357-200    
205 99101-357-205    
More Information
Manufacturer Keihin
Sherco Part Code 1247, 1248, 1347, 1352, 1353, 1402
Beta Part Code 1642301 000, 1642303 000, 1642305 000, 1642302 000, 1642306 000, 1642304 000, 1642307 000, 1642308 000, 1642309 000, 1642310 000, 1642311 000
Year 2007, 2008, 2009
Model 320
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