Frame 24 Dialed frame size, Alpha Silver Aluminum Fork Dialed suspension, 45mm travel Front hub Alloy Rear hub Alloy Rims 24 32-hole alloy Tires Bontrager XR1, 24x1.85 Shifters Shimano Tourney, 7 speed twist Front derailleur Shimano Tourney TY300 Rear derailleur Shimano Tourney TY300 Crank Dialed adjustable length 127mm - 152mm, 42/34/24 Bottom bracket Loose ball Cassette 14-28, 7 speed, freewheel Chain KMC Z50 Pedals Dialed 9/16, platform Saddle Dialed 24 size, padded Seatpost Steel, 27.2mm Handlebar Bontrager alloy, 25.4mm, 25mm rise Grips Dialed, Kraton Stem Bontrager alloy, 25.4mm, 15 degree Headset Adjustable ball bearing, threadless Brakeset Alloy linear-pull, Dialed alloy levers Chain guard Test Data Kickstand Kickstand Weight 12.22 kg / 26.95 lbs Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 170 pounds (77 kg).

Regarding the extra length of the chin strap, I simple cut the extra length off mine once I got it adjusted to my liking
They arent very strong and tend to come unclasped
WaveCel and SPIN are two other systems built around the same basic idea: managing angled impact, not just direct hits
Not whisper quiet, but well below average for a carbon helmet in this weight class