Searched the internet and gtagarage site for dlc bikes and i found only not working mods or really bugged..

8 Dlc Bikes from Lost and Damned in Grand Theft Auto IV PC Version.

I replaced 8 cars!

Stratum - Angel |
Solair - Revenant |
Peyote - Hexer |
Fortune - Lycan |
Marbelle - Wolfsbane|
Hakumai - Deamon |
Virgo - Diabolus |
Uranus - Nightblade |

Vehicles List here - http://www.gta4.net/vehicles/

Tested with GTAIV 1.04 Version 100% WORKING! NO BUGS

NOTE: If you have problems with pool, bowl or other bugs you need to create a new savegame!