WM Inc. is the official YC modification company. Don't even bother asking for mods, the waiting list is already backed right up.

FAST 201 with SM2 rings affixed.

BootPhaktor

Patriot/X

Yo-yo Crusaders Aussie Headsmasher

Patriot Mod Line-up

Mini-SM2

Saga Ultra Heavy Weight

Patriot with big aluminium rings.

HFH with aluminium rings.

2 HFHs with aluminium rings.