The Btwin Riverside 100 Red Hybrid cycle. is one of the different models from the house of Btwin.The Frog ARSENAL has Rigid steel fork (11/8 threaded pivot) Suspension/Fork making it a very comfortable bicycle to ride.Singlewalled aluminium rims with 28" diameter (21622). Steel hub (full axle). Axle can be removed using a 15 mm spanner. wheel of the bicycle is equipped with Plastic brake levers Steel front/rear VBrake brake..The tyre size is Singlewalled aluminium rims with 28" diameter (21622). Steel hub (full axle). Axle can be removed using a 15 mm spanner..Some of the main rivals include the Tata Stryder 26 Harris 100 and Tata Stryder 26 Harris IC.