Yet again, Fifty-50 proves you can teach an old dog new tricks. The person behind the brand deserves some praise for the quality and innovation of the company's array of products. 

The Prime Frame utilises Fifty-50's new "Core System 2". The Core System 2 features an aluminium core and nylon outer. This system brings together two worlds in synergy. The aluminium core provides a rigid structure perfect for energy transfer and responsiveness whilst the nylon outer walls provide smooth and fast grinding capabilities. 

The system is not completely unique but the price point makes this innovative product extremely accessible. Very big thumbs up from us. 

Features
Injection-moulded walls with glass-filled nylon
Extruded aluminium Core System 2 structure
Custom single tool 8mm axles
250mm or 270mm wheelbase
120mm split between wheels 2-3
65mm riding antirocker
60mm riding flat
Compatible with all Core System 2 frame walls

Size guide
Medium: UK5-8 (250mm)
Large: UK9-12 (270mm)