BROS's Carburetor is "KEIHIN" product and crossing. The detachment and attachment is easier compared with 4 parallel type, although these are a cross. But, the connection with the air cleaner box is difficult a little bit. Jet setting of the Carburetor seems to differ a little bit in 2nd product from 1st product.
| SPECIFICATIONS | |||||
| NC25 (NT400J) NC25-1000001~ | NC25 (NT400K,K2) NC25-1050003~ | RC31 (NT650J) RC31-1000001~ | RC31 (NT650K,K2) RC31-1050005~ | ||
| Carburation | KEIHIN 31mmCVx2 | <---- | KEIHIN 34mmCVx2 | <---- | |
| Identification number | VDF1 | VDFIC | VDG3 | VDG3A | |
| Pilot screw turns out | 2-1/2 | 2-1/4 | 2-1/2 | 2-7/8 | |
| Main jet | Front | #140 | #142 | #132 | #138 |
| Rear | #132 | #135 | #138 | #132 | |
| Slow jet | #35 | <---- | #42 | <---- | |
| Float level | 7.0mm | <---- | 9.2mm | <---- | |
| Jet needle | Can't adjust | ||||
| Fuel pomp capacity | 600cc/min (10V case of over) | ||||