SB ONE Boner tensioner £110.00 Boner tensioner only. No sprocket, no sprocket spacers. More info from SBONE . 10 in stock SB ONE Boner tensioner quantity Add to cart Category: Brand new parts Tag: sbone Let the others know:Tweet Related products Burgtec stem BLACK £95.00 Read more Burgtec stem BARBIE PINK £95.00 Read more SB ONE XD converter 13T £77.00 Read more Burgtec stem SILVER £95.00 Read more Like this:Like Loading...