I have just measured my bolts from the Challengers. The thread is 45mm long, and 15mm has clearly been within the hub.
I have also just measured the bolts from the original Cyclones. The thread is 35mm long and 13mm of it has been within the hub.
I think I will buy 55mm bolts.
I have also just measured the bolts from the original Cyclones. The thread is 35mm long and 13mm of it has been within the hub.
I think I will buy 55mm bolts.