Anyone running 13t/48t on their newer YZ250?

ginger969
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ginger969
Edited Date/Time 4/26/2016 10:51pm
I got a handful of 48t free rear sprockets and was wondering how this might feel vs my stock gearing now...

Thanks!

SP
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Derek Harris 4/24/2016 2:48pm
4/24/2016 2:48pm
I loved the 48 rear paired to a stock 14 front.

It depends on your weight and track types - but on more open or loamy/soft terrain tracks the 48 really seemed to spread the power out for me - where stock I felt the bike was mostly off bottom and mid - then signed off a tad early.

The other good bolt on for the "issue" for me was a pc pipe...but to each their own as not everyone likes the loss in bottom.
jeffro503
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jeffro503 4/24/2016 3:01pm
4/24/2016 3:01pm
I run a 13/49 on my RM's which is pretty close to the same motor package of the YZ's. I have heard of quite a few guys running 14/51 and 52's. I haven't tried that type of gearing but some guys swear it works better. Not sure exactly why.
ginger969
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ginger969 4/24/2016 3:04pm
4/24/2016 3:04pm
Derek Harris wrote:
I loved the 48 rear paired to a stock 14 front. It depends on your weight and track types - but on more open or loamy/soft...
I loved the 48 rear paired to a stock 14 front.

It depends on your weight and track types - but on more open or loamy/soft terrain tracks the 48 really seemed to spread the power out for me - where stock I felt the bike was mostly off bottom and mid - then signed off a tad early.

The other good bolt on for the "issue" for me was a pc pipe...but to each their own as not everyone likes the loss in bottom.
the YZ's power is already super smooth for me so I just don't want to lose useable power I guess...I weigh 165 with gear on and ride mainly a a fairly open track as well as some fun singletrack stuff! I'll give the 13/48 a shot ha
JW381
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JW381 4/24/2016 3:34pm
4/24/2016 3:34pm
What is stock? I thought 48 was stock.

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mb
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mb 4/24/2016 10:01pm
4/24/2016 10:01pm
JW381 wrote:
What is stock? I thought 48 was stock.
14/50 stock.

13/48 is basically 14/52. If you're fast you would probably be 3rd and up on the MX track.
Maverick313 4/26/2016 8:47am
4/26/2016 8:47am Edited Date/Time 4/26/2016 8:48am
jeffro503 wrote:
I run a 13/49 on my RM's which is pretty close to the same motor package of the YZ's. I have heard of quite a few...
I run a 13/49 on my RM's which is pretty close to the same motor package of the YZ's. I have heard of quite a few guys running 14/51 and 52's. I haven't tried that type of gearing but some guys swear it works better. Not sure exactly why.
I read in a magazine in the 90s that Honda liked to use the 14 tooth front sprocket because it changed the torque load, when matched with a bigger rear sprocket. I tried it a long time ago with 14 and 52/53 gearing and it seemed to increase torque and traction on my CR250. I've been running it ever sense, even with my 450. It has the added benefit of the chain and front sprocket lasting longer.
slipdog
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slipdog 4/26/2016 10:48am
4/26/2016 10:48am
I'm in the 14/48 club... You gotz to revvvvvvvv that sucka!
mmain62
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mmain62 4/26/2016 1:30pm
4/26/2016 1:30pm
Last year I had a 13/50 combo on my 07 and that thing was so snappy off the bottom all my buddies had a hard time controlling the ol girl. This year I switched to 14/50 and I like it a ton better a lot smoother compared to the torque monster of last year. I have no clue was a 13/48 would feel like.
riggedfmx
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riggedfmx 4/26/2016 4:06pm
4/26/2016 4:06pm
I run 13/49 on my 2015. She runs awesome. I had a 13/50 on it but felt too snappy.
cable
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cable 4/26/2016 8:19pm
4/26/2016 8:19pm
dehoop ran 15-54.. helped starts
jeffro503
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jeffro503 4/26/2016 10:51pm
4/26/2016 10:51pm
jeffro503 wrote:
I run a 13/49 on my RM's which is pretty close to the same motor package of the YZ's. I have heard of quite a few...
I run a 13/49 on my RM's which is pretty close to the same motor package of the YZ's. I have heard of quite a few guys running 14/51 and 52's. I haven't tried that type of gearing but some guys swear it works better. Not sure exactly why.
Maverick313 wrote:
I read in a magazine in the 90s that Honda liked to use the 14 tooth front sprocket because it changed the torque load, when matched...
I read in a magazine in the 90s that Honda liked to use the 14 tooth front sprocket because it changed the torque load, when matched with a bigger rear sprocket. I tried it a long time ago with 14 and 52/53 gearing and it seemed to increase torque and traction on my CR250. I've been running it ever sense, even with my 450. It has the added benefit of the chain and front sprocket lasting longer.
Hmm?...i may have to give this 14/50 or 51 a try. Over on TT I saw quite a few guys talking about it.
Rider 5280
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Rider 5280 12/3/2017 8:32pm
12/3/2017 8:32pm Edited Date/Time 1/8/2018 6:50pm
I ran 15/45 for desert riding on my 06 YZ250 2-stroke to try to keep up with the 450 4-strokes and it still was smokin' fast for MX. It still had no problem lifting the front wheel in any gear. I don't think you'll have any problem either. I am 175 lbs without gear.
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ehr400
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ehr400 12/4/2017 3:57am
12/4/2017 3:57am
I run a 14/ 49. We ride sand and deeper loam almost always, and I am over 200lbs. Pulls forever but also helps Derek Harris's porting make it happen.
hogkiller
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hogkiller 12/4/2017 2:22pm
12/4/2017 2:22pm Edited Date/Time 12/4/2017 2:23pm
ran 14/48 last year I liked it a lot all moto on a 2013 yz 250 before that I had 14/49 stock in Canada then tried 14/50 did not like that at all 14/48 was the best. I am 230 pound with out gear
Skerby
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Skerby 12/6/2017 12:24pm
12/6/2017 12:24pm
I ran 14/50 on my YZ125! I thought stock gearing was the same as the 250. It isn't lol, I never got it out of 4th gear with that combo, on a six speed!
Stuntman949
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Stuntman949 10/24/2018 4:36pm
10/24/2018 4:36pm
Rider 5280 wrote:
I ran 15/45 for desert riding on my 06 YZ250 2-stroke to try to keep up with the 450 4-strokes and it still was smokin' fast...
I ran 15/45 for desert riding on my 06 YZ250 2-stroke to try to keep up with the 450 4-strokes and it still was smokin' fast for MX. It still had no problem lifting the front wheel in any gear. I don't think you'll have any problem either. I am 175 lbs without gear.
How was it in the tight stuff? Thinking of ditching my KX500 for desert racing
Rider 5280
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Rider 5280 10/24/2018 8:03pm
10/24/2018 8:03pm Edited Date/Time 2/24/2019 4:37pm
I thought it was great. I also ran a Rekluse Core EXP 1.0 at the time and the combo was remarkable. A lot of people would roll their eyes at that gearing, but I could keep up fine with everyone and it also helped calm the chassis since I wasn't revved out all the time. It essentially made the gears longer.
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TJMX947
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TJMX947 10/25/2018 6:11am
10/25/2018 6:11am
I ran a 14/52 (basically a 13/48) on my 2008 YZ250. I liked it, had a tad less top end than I would have liked but I could literally take some turns in 4th gear. One thing about that gearing I felt like it loaded the rear shock up pretty quickly but I could ride an entire track in 3rd gear most of the time.
2stroked
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2stroked 10/25/2018 7:02am
10/25/2018 7:02am
I run a 15/48 on my 2013 YZ250. I primarily race offroad and grand prix. I do hit the tracks and I usually go back to the stock 14/50 for tracks, but when Im super lazy and run 15/48 on the tracks the bike does fine. Its actually almost a cheater gearing because you can leave it in second and not shift as much.

For me 14/50 feels super snappy and short geared. 15/48 has no problem getting the front end up either.

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