Not only are they dirt cheap, the factory plastics themselves are cheap, flimsy and fragile. I wouldn't be surprised if some off brand Chinese plastics are of better quality.
Originally Posted by Wibbly
Koso 4V GF Ported / Drowsports 181 piston / Takegawa Oil Pump, Cam Chain Tensioner, Crank Support Kit & Catch Can
Koso 34mm TB GF Ported / DynoJet PCV, WB2 & AFR / GF Manual Cam Chain Adjuster
Drow Sports CF Intake & Oil Cooler / Hindle Exhaust / OPMID 2 Temp Gauge
Kitaco Clutch Cover / SMR 6 Disc Clutch & 60% Springs / Chimera Clutch Plate
RacingBros Adj Fork Kit and Shicane HLR Shock / Vagabond Fender Eliminator