Warning, this crankshaft increases the engine capacity, it is in no way approved or authorized on the road Use reserved only for competition on circuit, run ....
Here is the BRK Competition crankshaft special long stroke 45mm. This crankshaft in this 45mm long stroke will allow you to gain in displacement while bringing the engine closer to the so-called "square" motor movement, that is to say a real and felt performance gain. However, be careful, switching to a long stroke increases the diagrams, so do not install a kit that has very large diagrams in 40mm stroke on a 45mm stroke under penalty of obtaining unusable diagrams.
We totally advise against switching to a 50cc kit (d.40mm) in long stroke, you would turn in hyper stroke .... Clearly, the 45mm stroke if it is well accompanied will turn out to be a very big gain in torque and performance. If you want to put this crankshaft on a kit for normal racing like MALOSSI MHR TEAM, TOP PERFORMANCES or other .... You need a 2.5mm shim! You also need for the best, plan to align the lights at bottom dead center, we recommend checking the diagrams during assembly.
From now on, BARIKIT long stroke crankshafts come out in Ø20mm silks like some BIDALOT or some ATHENA Racing. It will therefore be necessary to install large model bearings (those of minarelli scooter / booster or DERBI), a specific bearing pack with spy seal exists in this size, in ATHENA but also in BARIKIT. In addition to this, you need to know more about it.
Clearly, this crankshaft remains quite correct in relation to its price, the masses are full for more pre-compression, a balancing is carried out digitally.The finish is very good, however the connecting rod and the steels used remain quite low-end. The big end cage is also revised upwards for more solidity, a reinforced model 12X16X16mm has been installed and each lubrication of the crankshaft has been studied and calculated.
Characteristics:
-Balancing: yes
- Crank pin Ø 18mm
-Course: 45mm against 40.00mm for the origin
-To be fitted with: 85cc BARIKIT kit / kit for 45mm stroke or 2.5mm shim under the cylinder
-Soies of: Ø20mm as the origin
-Bielle size: 90mm as the origin
- Needle cage: Ø12mm X Ø16mm by L.16mm
-Masses: full
