hm swing arm

[jmkjr72]

www.adrenalin-pedstop.co.uk/p/Polini_Torsen_WD_swing_arm_for_Yamaha_Aerox_MBK_Nitro_50cc-3479.aspx
www.rrd-preparation.com/en/Oscillating-arms-spillplate-accessories-screws-and-bolts-various-Liquid-Horizontal-MINARELLI/2382-product-2382.html

wonder if this would fit our long cases both the north american zuma case and the 40qmb long case engines

[190mech]

It 'should' fit,but I'd do some cross reference work before ordering.
There are other companies that build them too..
I think its a great idea as it stiffens a weak design!!

[90GTVert]

Having seen so many exhaust fit issues, it would kinda surprise me if something like that went on hassle-free.