Box Four 8 Speed Drivetrain GroupsetReady for blasting across the MTB trails, this 8 speed groupset delivers smooth and reliable performance on every mountain bike ride. It is designed for riders who want less fuss and features an 8 speed shifter and an 11-42T cassette, which offers a great range of gearing to meet the demands of your off-road adventures. Designed for smooth operation, its rear mech uses a Limited Slip clutch in a compact cage. A final highlight is its custom 8 speed chain that’s built for abuse. This makes it a great groupset for riders that want strong groupset without all the frills and at a wallet-friendly price.Box Four 8 Speed ShifterThe Box Four shifter’s main features aren’t strikingly different from Box Three’s. The key difference is its 8-speed platform. We’ve chosen to modernize the 8-speed in much the same way we did the 9-speed for Prime 9. Just like the Prime 9, the Box Four shifters take advantage of the “less is more” theme and exploit durability, simplicity, and reliability.Features: Material: Glass Fibre / Nylon Composite, Steel Extruded Clamp 2 Piece Pull Lever / Up to 3 Gears Per Shift Resin Top Shell Fast Action Release Lever Not Intended for E-Bike Use Weight: 128gBox Four 8 Speed Wide Rear Derailleur BlackThe Box Four Rear Derailleur is the base of Prime 9 Technology that offers an affordable clutch based 1 by 8-speed derailleur that is simple and light; this makes it a perfect candidate for every entry-level bike that traditionally has a 3 by drive-train that is neither durable nor user friendly.Features: Material: Aluminium, Glass Fibre / Nylon Composite, Steel Limited Slip Clutch Bearing Pulleys Nylon Composite Knuckle Direct Channel Cable Stay Die-Cast Linkages Stamped Inner and Outer Cage Compatible with Standard Derailleur Hangers (Non Direct-Mount) Weight: 328gBox Four 8 Speed 11-42T CassetteThe Box Four cassette adapts our Prime 9 philosophy of durability, simplicity, and reliability at a great price point. All cogs are stamped from steel, given our durable black coating and then the larger cogs are pinned to each other with spacers for easy installation.Features: Material Cold Rolled Steel Steel Stamped Cogs No Spiders Wide Ratio & Consistent Progression ED Black Protection Compatible with HG Freehub Bodies Not Intended for E-Bike Use Weight: 473gBox Four 8 Speed 116 Link Chain NaturalThe Box Four chain employs an 8-speed platform in a similar strategy to the Prime 9 but at a great price point. The chain is polished and then chemically treated to achieve corrosion resistance. We engineered the inner link spacing to be a little tighter than other 8-speed chains and is optimized for use with our Box Four Wide/Narrow Chainring.Features: Material: Hardened Alloy Steel Durable Hardened Solid Pins Wide/Narrow 8 speed Specific Weight: 364gBuy Box Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.