05 Gearing

Thinking about changing the gearing on my 05 450. What are you guys running for the track? Stock just isn't feeling right.

05 is 50 or 51 right? :)

What does not feel right?

I went from a 51 to a 50 tooth on my '05 450 and like it very much. I felt that the 51 was dropping off a little too soon at top speed. The 50 matches my track and riding style just right :)

Thats I'm thinking, it drops off just a bit on the top end. How much did you lose on the bottom say in 2nd gear?

I run 15/48, same as 14/46. What's stock on the '05?

Stock on 05 is 14 front and 51 rear..

Thats I'm thinking, it drops off just a bit on the top end. How much did you lose on the bottom say in 2nd gear?

2nd gear didn't lose very much bottom at all, it will just rev out farther. Last weekend I was starting in 2nd gear and got the hole shot both motos :)

Stock on 05 is 14 front and 51 rear..
Dang, no wonder top end falls off. That's 250F gearing. '03/'04 was 14/48, and that was too low.

Yeah I know thats what the 03/04's run and I have been trying to figure out what way I want to go. I know the top falls off real quick on 05.

The 03 and 04 use 14/48 the 05 uses 14/51 but has different internal ratios. The final gearing is almost identical.

Dang, no wonder top end falls off. That's 250F gearing. '03/'04 was 14/48, and that was too low.

just a thought and im prop, wrong. but do you think this is why people are saying the 05 is slower.

The 03 and 04 use 14/48 the 05 uses 14/51 but has different internal ratios. The final gearing is almost identical.

I understand that was done to keep the tranny and clutch spinning faster to allow softer clutch springs for a lighter lever pull.

I run mostly motocross and 14/45 works good for me. your riding style may vary.

This whole subject revolves around a couple of variables. First off for those who don't understand the 05 has a taller ratio number at the drive sprocket thus needing the larger rear sprocket to bring it back to near the 03/04 final gearing. On 03/04's a lot of guys tamed the bike down by going with a smaller rear sprocket. This makes the gearing a little taller and spreads the gaps between the gears just a little. Most guys were looking to utilize second gear with an occasional shift into third. For me personally I found it more to my liking to do just the opposite. I went a couple teeth up on the rear and ran third most of the time. I used second to get over the gate grabbed third and pretty much left it there. This set up also made 4th a little closer to third and more useable when i was on a long enough straight to grab another gear. I am assuming I'm going to do the same with my 05. It all comes down to rider preference and feel. Don't be afraid to experiment with the gearing a little bit. Just think about what the bike feels like and what you want to change about it and give it a try.

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