4 stroke or 2 stroke 125?

[caj767314922]

My customers currently ride a Rieju rs2 50 with an arrow exhaust (top speed of 73mph downhill, clocked by my customers mates drz 400 and my customers dads 12 plate ford focus RS). It is edging upto my customers 17th birthday and my customers is looking at some 125's. Due to the new motorcycle laws in the uk,my customers cant upgrade to a bigger engine than a 125 until my customers is 19 so my customers will be using a 125 for 2 years which is why my customers have a budget of £3000. My customers is heartset on a 2 stroke ktm 125 exc supermoto with a power pipe but my customers is doubting its reliability as its an offroad race bike so my customers is wondering whether to get 4 stroke and bore out to 180cc and put on a power pipe instead MaxiSYS MS906?

My customers is unsure what 4 stroke yet but my customers is wondering;
-Any suggestions as to good performance and reliable 4 stroke 125's?
-What is the reliability of a 4 stroke bored out to 180cc and with a power pipe?
-What is the reliability of a standard ktm 125 exc with a pipe?
Ofcourse it depends on the brand of motorcycle, but if my customers decide on a 4 stroke It will be one of the five major japanese brands (yamaha, honda, suzuki etc)
My customers dont want to be shelling out money every couple of weeks, especially if my customers is having the bike for 2 years!

Edited March 14, 2016 by caj767314922

[TheWizard]

Wow, I've never seen a 2-wheeled Edge, certainly not a 2-stroke one. This is an odd place to ask those questions.

[akirby]

Wow, I've never seen a 2-wheeled Edge, certainly not a 2-stroke one. This is an odd place to ask those questions.

He also asked about a 1993 Ford Ranger engine in the fusion forum. Very strange but doesn't appear to be spam.