Gear recommendations to improve low-end power : LUSENET : MV Agusta F4 : One Thread

I just purchased a 2002 F4S 1+1 and although I have not taken delivery of it yet or even had a chance to ride it, I have heard a number of complaints that the bike lacks low-end power. I was wondering if any other owners have this complaint and if anyone has played around with the gearing to improve low- end power. If so, please let me know your findings and recommendations.

Regards, Jonas

-- jonas musson (, July 22, 2004


Yo! Just like any other bike, you can play with the gearing of the MV's too. Parts are available from Casoli, Ferraci or from MV Agusta Special Parts. MV Agusta has a looooonnnnggg low-end power and you can only feel the power band at around 7,500 RPM. You will feel the G-force coming into you once you achieve this RPM. Enjoy your bike & ride safely.

-- AJ (, July 22, 2004.


Thanks for the advice. I will contact Casoli and Ferraci to see what they recommend.



-- Jonas (, July 22, 2004.

Jonas I had Casoli US put an Afam quick change unit on with a 42 tooth sprocket. The stock rear is 40 tooth. It is nice and power comes on at around 6500rpm instead of 7500. You can also get a 43 tooth. Only thing is from what I have observed is the speedo is now 4mph off. Wich would be apx. 6.4 Kph if you are in Europe.

-- Ron King (, July 23, 2004.


Thanks for the advice. I just got an email from Casoli this morning with the same recommendation. I will post it for anyone else who might be interested.

Regards, Jonas

Good Day Jonas, Congradulations on your MV purchase! Here are a couple of things that you can do to improve the lower end power on the F4's: 1.)Changing the rear sprocket to a 2 teeth larger sprocket (should be 42teeth), It will help your low end accellaration tremendously! The best way to go about that is with an AFAM quick change carrier conversion, they work really well we install them all the time and you have various size options with sprockets and they are not expensive to replace, the carrier kit is $259.95 and it comes with any size sprocket of your choice and if when you need to replace the sprocket again you can do it yourself and they are only $69.95 2.) In addition to changing the rear sprocket you will also need to replace your chain and we recommend the DID ERV520VR Gold Race Chain! They are the best!!! They are around $169.95 a piece! If you also afford it the SPR Headers or MV Performance Exhaust systems are also a nice addition to the bike in not only power but sound and weight savings! and along with a power commander the bike will run very strong and linear. These are some of the things that most of our customers get done when they purchase an MV. There are a lot of other things that can be done and just to give you an example we are currently working on a 2002 Tamburini Limited Edition F4 and we are redoing the whole bike and it is going to get everything in carbon fiber as well as porting and polishing the heads with a thinner head gasket for raised compression and the whole bike is going to be powdercoated in the Tamburini Cobalt Blue including the frame,swingarm etc... There is really no end to what you can do with your MV, it is just a matter of what you want done. If you have any other questions please feel to give us a call and we will gladly help you in any way we can. You can ask for either myself or Ryan. Cheers, Reeve Toll Free(866)-539-0188

-- Jonas (, July 23, 2004.

Jonas I actually have the spr header on order at Casoli hope it comes in soon.......I also had them install a power commander. After the spr header is in place they are going to dyno a custom map for the power commander. I can not wait because she runs better than it was stock now. Oh yes they sent my pipes to Casoli in England because I wanted an extensive gutting on them. They look great and sound awesome after this conversion.

-- Ron king (, July 23, 2004.

Yo! I recommend the Power Commander where most people who uses this yields positive reviews. For Carbon Parts, there are few yo can get these from. Try Casoli, Ferraci & QB Carbon. QB Carbon makes nice Carbon Parts for MOTOGP.

-- AJ Adiviso (, July 24, 2004.

Thanks for the advice! I have heard the Powercomander is an excellent upgrade. Are there any proven maps out there for the MV F4S, or do you have to have someone put it on a proper dyno?

Anyone know if you can recalibrate the speedo when changing the gearing?

Ron, let me know how the header and Powecomander work!

Thanks guys!


-- jonas (, July 25, 2004.

Jonas my Mv will be picked up Monday for SPR header install and then custom dyno mapping for power commander. I will let you know how it is when returned next week.

-- Ron King (, July 30, 2004.

Ron, thanks for the reply and please let us all know how your mods work.

Just like any bike there are many options out there, all claiming to "improve" or "add" to your experience, but unlike other bikes the MV parts are much more expensive and cost prohibitive to "experiment" with parts that do not provide results. I would rather wait and research to find the right solution, than to hang parts on the bike hoping they claims are true.


-- jonas (, July 31, 2004.

Jonas look under post PWC 3 maps for Casoli pipes and spr ti header 2004-08-07 for the answer to your question about my new mods.

-- Ron King (, August 07, 2004.

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