300Cc 4Rt

[martyd]

Before I jump in

What in the opinion on a 300cc 4rt?

Thanks

[shercoben12]

well you wont get any grip with it in mud lmao

[jj65]

Make sure it's got a bigger radiator, they run hot.

[martyd]

Thanks Shercoben do you no this from experience?

jj65 is that right they run hot?

The guy that has the kit said only on a long hard road run this happens

Dont think i want to buy a rad aswell

The 280cc kit seems to be ok?

Marty

[shedracer]

Don't know if you already know, but 300 kits normally require crankcase modification, which is why most people go for a 280 kit. 280 is much quicker and easier to fit, less hassle.

[jj65]

Why do you want, need the 300 kit, are you a very good expert or better? I know a very good expert rider that rides a standard engined 4rt and wins most often at club level, on a standard 250. But if you wanted to go bigger, the 280 kit would be more than suffient, without the need to modify the crank cases (which is what I believe you have to do with a 300 kit). Future sell a bigger rad for reason ;0). I'm no expert on this subject, but I know quite a lot 4rt owners, but don't know anyone who has done a 300 kit. (Munch on here is your man, for info)

No Grip in mud, well that's debateable, depends on what setup there running really, there are bikes that are a bit better, but if they were c###, no one would be riding them, would they, there are plenty of good clubmen riding them. (It's a shame there isn't someone like Sam Connor or Dan Thorpe riding one next year, as they would show what the bikes really capable of).

Is it a bike your buying, or are you moding one you own already? The best mod on an older 4rt is a dual map throttle body, but if you can afford a new bike, buy the new 260, you won't regret it ;0).

[warby beta]

As a 6'7" 20st decent clubman rider I don't feel I need any more power than my 280 is giving. The only time it is lacking is usually due to having to haul me around. A 250 is much flatter and I wouldn't be confident on some good clubman sections, again that's probably due to my size more than anything.

[martyd]

Thanks for the replies

jj65 I'm a avg clubman

Just fancied the bling factor more than anything

I have just bought a 06repsol used only 3 times since new

As you say a 2 stage throttle might be a first option

Alougth a 300 cc kit is cheaper lol

The temptation of all these upgradable parts is amazing !!

Warby beta your 280 what else have you done?

Exhausts etc?

Thanks Men

Marty

[jj65]

DMTB is the first thing with a Laia Sanz map, change the gearing to 42/9 or 43/9, put a mitani titanium front header pipe 27mm and mitani titanium silencer (saves over a kg and better smoother power, especially with a DMTB and a 280 kit, oh, and I know where there's a mint set up for sale, if your interested). As it's an 06, you might want to put a mitani clutch in to get a smoother action.

[warby beta]

I have an s3 ti front pipe and a single map throttle body. Don't know what map is on it, whatever pidcocks supplied with their 280's.

[martyd]

I have an s3 ti front pipe and a single map throttle body. Don't know what map is on it, whatever pidcocks supplied with their 280's.

Thanks Warby

i have a mitani front pipe and a programmable single stage throttle body

Marty

[martin 305]

Hi Martyd I have an 06 4rt and have ridden it for about a year and loved it , it has a mitani tit pipe , s3 tit front pipe and a single programable body on it running a soft map and I found it ok . I them found a s3 280 kit on eBay

[martin 305]

Hi Martyd I have an 06 4rt and have ridden it for about a year and loved it , it has a mitani tit pipe , s3 tit front pipe and a single programable body on it running a soft map and I found it ok . I them found a s3 280 kit on eBay £160 so it's now fitted !! Wow what a difference bike sounds awesome really deep tone , bottem end seems much smoother less snappy at low revs , at about half to three quater throttle it bites !!!! . I find if you plant your ass over the back gently feed it in it grips better than the standard bike did it's now running a beginner map , but I think the key is the ability to try a map that suits. Your style . I normaly ride easy / clubman so don't need extra power but it had to be done

forgot to say am running 41 /9 gearing and I also have mitani clutch , I find I use second gear mostly only first in the tight bits

[martyd]

Hi Martyd I have an 06 4rt and have ridden it for about a year and loved it , it has a mitani tit pipe , s3 tit front pipe and a single programable body on it running a soft map and I found it ok . I them found a s3 280 kit on eBay £160 so it's now fitted !! Wow what a difference bike sounds awesome really deep tone , bottem end seems much smoother less snappy at low revs , at about half to three quater throttle it bites !!!! . I find if you plant your ass over the back gently feed it in it grips better than the standard bike did it's now running a beginner map , but I think the key is the ability to try a map that suits. Your style . I normaly ride easy / clubman so don't need extra power but it had to be done

forgot to say am running 41 /9 gearing and I also have mitani clutch , I find I use second gear mostly only first in the tight bits

Thanks looking like a 280 kit will be the one

Will be hard work to try and find a used one like you !!!

I'm on 9/42

Marty

[warby beta]

Trial enduro direct sell the s3 big bore kits new at quite a reasonable price..

http://www.trialendurodirect.com/products/2_12/S3_MONTESA_4RT_Big_Bore_Kit__471.html