SRAM PG-1050 10 Speed Cassette with GX Derailleur and 3 Speed Sturmey Archer Hub.

UTCustom Freewheel Posi Differential - Get rid of one-wheel drive for good! Upgrade to the UTCustom differential and take advantage of increased traction and power to the wheels! Available individually or as part of an axle upgrade kit. The differential ships assembled.

Catrike Chain Tensioner by TerraCycle - This Chain tensioner system made for all Catrike models by TerraCycle allows the rider to change the boom length without having to worry about adjusting the chain. It's easy to set up, hassle-free, and makes it easier for different friends to check out your cool new trike.

Catrike Clamp On Sport Return Idler Kit by TerraCycle - Terracycle Clamp on idler mount is composed of a Return idler, Single sided clamp on chain keeper, custom stainless bolt, spacers. This kit is for Catrike Riders who wish to eliminate all of their return side chain tube by running the chain path through an additional idler. The kit can be mounted either in front of or behind the trikes cross arm depending on how where the boom is set for length.

Flat Bed Transport Rack for Cat-4 Quad -

Power Grip Sport Pedal and Strap Set - Don't want to have your feet come off the pedals but don't want to wear special cycling shoes? Helping you avoid the hassle of special shoes, the Power Grip straps hold your feet securely on the pedals while wearing your favorite pair of sneakers. A favorite option on many recumbent bicycles and trikes. To use, just put your feet through the straps at an angle. When your foot straightens out the straps lock against your shoe. Simple and effective.

Catrike Adjustable Headrest and Neck Rest - Easy to adjust and very light, the Catrike Neck Rest is a great upgrade to your trike.

UTCustom Catrike Seat Extensions - We have had so many people tell us that they wish their Catrike seat could go more upright. Well, now you can! Our seat extensions let you adjust the seat back to a nearly vertical position. Hey, it's your trike right? You gotta be comfortable! And, yes, they are sold as a pair since you need both sides it would make no sense to sell just the right side (or just the left). Fit's all Catrikes, except Dumont.

VEE Mission 26x4 tire.

Avid BB7 Front Disc Brake Kit (pair) - This kit includes everything you need to upgrade your trike's brake system to the best mechanical disc brake system available. Perfect for for any home builds.