The Topkick's drivetrain is outfitted with Microshift push shifters that control Shimano's tried-and-true TZ-30GS derailleur. The drivetrain also offers a strong aluminum wheel set with a V-shape rim profile and high-flange alloy hubs. And to keep you stopping smoothly in any circumstance, the Topkick boasts front and rear Promax disc brakes. Disc brakes are vastly superior to rim brakes, especially under adverse road conditions. True to its GMC roots, the Topkick mountain bike is rugged, good looking, and built for the long haul. Boasting a full-suspension, extra-strong aluminum frame, the GMC Topkick mountain bike is an ideal choice for both trail riding and rough city riding. The frame employs a floating beam suspension design mated to a Zoom suspension fork with elastomer/spring technology. This gives the bike a smooth, steady performance even on rough terrain.

Specifications:

• Frame: 26-inch full-suspension aluminum MTB frame
• Fork: Zoom CH-386 suspension fork, 65mm travel
• Shocks: Kind Shock, adjustable to 650 pounds
• Chain: KMC Z51
• Stem: A-head TDS63K-8, EXT: 100mm, 15D
• Handlebar: HL-MTB 153, W: 600mm, R: 30mm
• Saddle: Velo, black padded
• Seat post: Alloy micro-adjust 27.2 x 300mm with quick-release
• Crankset: Alloy ISA 335P, 28/38/48, L170mm
• Front derailleur: Falcon MF 31 T
• Rear derailleur: Shimano RD-TZ30GS SIS, 7 speed
• Shifters: Microshift TS-50 ADII index L3/R7
• Brake levers: GP 30 AP aluminum
• Brakes: LCHI DSK-320 disc brakes, 160mm
• Rims: Alloy black 26 x 1.5 inches
• Tires: Kenda black with yellow band 700 x 25C

Gravity is FSA's label for DH/Freeride orientated products so the emphasis is clearly on big and burly. The range consists of such things as handlebars, stems, chainsets, headsets, chainguides, wheels and much more.

There's two new pairs of grips to go along with the new bar too. Both feature a miniature Gravity 'G' logo and you can choose from either a flanged version or lock-on with alloy rings and 3 colour options. The lock-on version costs £16.95and uses alloy lock-on rings and lightweight composite end caps for a weight of 145g a a pair. At £9.95 the standard grips are made from low durometer, super tacky rubber with grooves at either end for securing in place with zip ties or wire.

For 2010 Gravity releases the 777 bar, which has been specifically developed for DH bike setups with a tall front end, so offers just 5mm of rise. It's double butted and tapered 7050 aluminium with a shot-peened and lightning grey anodised finish. Back sweep is 10 degrees and weight is 327g.