Bro,You are only 14 !! That is Even 1 year younger than me !!! Anyway,I can suggest you NOT TO ride a bike in streets.Here in TAI
,I believe and Follow that One can legally ride his Motor vehicle atleast after the age of 16 !! How did your Mom allow you Man ?? If you are keen on buying one,Save more money-Get your budget to 20K or atleast 15K !! I can suggest you a TVS Samurai-
Spares are Cheap and are Readily Available Anywhere
Maintainence and Pollution is lower Compared to RX,Shogun and Shaolin
Anybody can service a Samurai unlike RX which needs Expert Mechs !!
'No-Problem Bike'-Says it All !!
Maybe Roadworthy at your Budget
It is not popular in Modding or in 2-Strokers Club Thingy !! (RX,RD,Yezdi,Shogun etc Club)
Pretty Bad condition at your Budget
Silent Engine Note
Tinkering,Rust Removal,Rust Treatment,Painting (Both on Frame and on Steel Parts-Tank.etc)
De-Carbonize,Remove Old Oil and Do Acid Cleaning on the Engine,Exhaust and Transmission
Overbore the Engine (I Think Max Overbore is around 114cc) and DON'T PAINT IT !!!
Up-jet the Carburetor
Replace Brakes with Apache RTR Front Petal Disc Brake (If Budget Allows)
Other than New Paint,Try to keep the Bike Looking Stock (Will save some Money for you)
Go for Fully Synthetic Oil for Both Engine and Gearbox (MAY favor Reliability)
Fix all Electricals (Wires,Bulbs,Indicators)
Get the 'TVS Racing' Sticker from the Apache RTR !!!
Try to Get the Shogun RPM Meter and Speedometer
Get the Engine Cowl
Remove rear Grab Handles
Get either Apache MIG r Pulsar Rear Springs (Suspension)
I couldn't think More as your budget is very tight !!
And There you go with a TVS Samurai 114cc Engine and a Top speed more than 100 Kmh !!
It will be as fast as the RX 100 but the Top speed is NOT like the RX 135 !!