Are they cotton reels or swingarm protectors? Well, they are both really!!

R&G Offset Cotton Reels protect the swingarm and core swingarm components from damage in the event of a crash, slide or drop. Doubling up as paddock stand bobbins too, they allow the motorcycles rear wheel to be lifted into the air with the use of a paddock stand to perform chain adjustments, chain lubrication and cleaning! 

Suitable for the Honda CBR250RR '17- models.