Carburetors (carburetion, carbs, carburettors) jet kits for motorbikes (made by Dynojet - USA)

Dynojet carburettor kits increase your engine's power and acceleration.
The difference in performance is due to the patented Dynojet fuel needle, which thanks to its sharper shape and provision for adjustment generates better fuel flow to the engine.
The first thing you'll notice after installing a Dynojet kit is that your engine revs up must faster than before.

Kits contain graduated fuel needles, different series of jets, washers, cotter pins, springs and drill bits for cases where the hole on the slide assembly must be enlarged. The kits indicated thus (**) also include needle jet cap nozzles.
Depending on the needs served by each kit, fuel needles may be aluminium, titanium or steel.
Clear instructions (Italian and English) are included in all packing for easy setting.

For higher efficiency, we recommend that Dynojet carburettor kits be installed with the associated K&N / Fast by Ferracci air filters.

Buell
Cagiva
Ducati
Honda
Kawasaki
KTM
Suzuki
Yamaha

Dynojet carburettor kits are available in 2 stages.

STAGE 1
To be used with the stock engine and air-box.
Designed with different calibrations (all included in the kit) for stock air filters, K&N air filters, stock pipe, stock manifolds with racing mufflers or complete racing exhaust system.
Power increase is approximately 5%.

STAGE 2
To be used with a modified air-box and a stock or mildly tuned engine.
Designed with different calibrations (all included in the kit) for stock manifolds and racing mufflers, complete racing exhaust systems, stock air filters or K&N air filters.
Stage 2 kits are designed for applications where individual filters cannot be installed and for applications where air-box modification improves the engine's performance.
Power increase is approximately 8%.

 


4 cylinders engine kit


Always check the enclosed parts list if you have doubts concerning the components contained in your Dynojet jet kit.
Carry out operations exactly as described in the instructions: failure to do so is almost certain to affect performance adversely.
Don't worry if the main jet size called for in the instructions seems wrong: always install the specified size. 
Note that the Dynojet instructions use the terms "non-original pipe " or "aftermarket or slip-on with high flowing baffle" to designate the exhaust pipe complete with manifolds. If you have replaced only the muffler, adjust jetting as if the stock muffler were still installed.

Adjust the air screw to idling, following the instructions schedule contained in the kit. If you have a CO meter, remember to adjust the air screw, so to have a CO value between 3 and 5.