RE: Titan 50 Review online
The Titan comes with a muffler. The SE is a metal blinged out V2 with a fake carbon windshield, different stickers and some metal parts. Its got the standard V2 boom and belt (shorter than a Titan)
Personally I'd get the Titan then get a metal head block and washout base when the stock parts get sloppy.
Also when you order your kit get part number PV0499 its a one piece machined tail hub, replace the stock hub when you build the kit. Its about 6 bucks and IMO should be included as standard.