Hardrock Disc 650b
Part No.  

Hardrock Disc 650b

Part No.  
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Hardrock Disc 650b
Overview
Technical Specifications
Reviews
Let's go ahead and forego the sales pitch. After all, you're eager to get out there and start exploring the dirt on a Hardrock Disc. The only question is, what wheel size should you go with? No matter your height or experience level, our Hardrock will fit you perfectly, but if you're more inclined to get a little rowdy or you need a little more standover than a 29er can afford, the Hardrock Disc 650b is the perfect choice for you. And with durable, performance-driven components, powerful disc brakes, a bump absorbing suspension fork, and our nimble, playful Sport Trail 650b Geometry, you'll be left feeling confident and inspired.
  • With reliable traction, puncture-resistance, and sheer speed over the dirt, our 650bx2.0" Ground Control Sport tires will keep you rolling with confidence over almost any terrain.
  • 650b alloy rims have been laced to a pair of our sturdiest hubs to form wheels that allow you mow over everything in sight, climb gracefully, and get to the bottom of the trail eager for more.
  • The frame is constructed from A1 Premium Aluminum in order to provide a lightweight, durable platform to support our acclaimed Sport Trail 650b Geometry. Combined, you get a bike that's efficient on climbs and eager on descents.
  • SR Suntour M303 fork features a coil spring that delivers 75mm of trail absorbing travel.

Technical Specifications

DRIVETRAIN
CHAIN KMC X8, 8-speed, w/ reusable MissingLink
BOTTOM BRACKET Square taper, cartridge bearings
CRANKSET Samox, forged alloy, square taper spindle, 42/34/24T, w/ chainguard
FRONT DERAILLEUR Shimano Tourney, 3-speed, top swing, dual pull
SHIFT LEVERS Shimano ST-EF51, 7-speed, trigger, w/ integrated brake lever
CASSETTE Sunrace, 7-speed, 11-34t
REAR DERAILLEUR Shimano Tourney, 7-speed
SUSPENSION
FORK SR Suntour M3030 650b, custom coil/MCU spring weights, 75mm travel, preload adjust, 1-1/8"" steerer, alloy lowers, Hi-Ten 25.4mm stanchions, disc mount
WHEELS
FRONT HUB Specialized, Hi Lo disc, alloy, double-sealed, ground race, QR, 32h
REAR HUB Specialized, Hi Lo disc, alloy, loose ball bearings, QR, 32h
INNER TUBES Standard, Schrader valve
SPOKES Stainless, 14g
RIMS 650b, disc, alloy, double-wall, pin joint, 25mm inner width, 32h
FRONT TIRE Specialized Fast Trak Sport, 40TPI, wire bead, Flak Jacket protection, 650bx2.0""
REAR TIRE Specialized Fast Trak Sport, 40TPI, wire bead, Flak Jacket protection, 650bx2.0""
COCKPIT
SADDLE Body Geometry mountain, thick padding, steel rails, 143mm
SEATPOST Alloy, 2-bolt, micro-adjust, 12.5mm offset, 30.9mm, anti-corrosion hardware
STEM Specialized, forged alloy, 4-bolt, 10-degree rise
HANDLEBARS Specialized, steel, 8-degree backsweep, 4-degree upsweep, 35mm rise, 25.4mm
GRIPS Specialized Body Geometry XCT, Kraton w/ gel, lock-on, closed end
BRAKES
FRONT BRAKE Tektro Aries, mechanical disc, organic pads
REAR BRAKE Tektro Aries, mechanical disc, organic pads
ACCESSORIES
PEDALS Plastic, 9/16"", w/ reflectors
FRAMESET
HEADSET 1-1/8"" upper/lower, ZeroStack 44, steel cups, loose ball bearings
SEAT BINDER Alloy, nylon/glass fiber washer, QR, 34.9mm
FRAME Specialized A1 Premium Aluminum, Sport Trail 650b Geometry, ORE down tube, externally relieved head tube, forged dropouts w/ reinforced disc mount, replaceable alloy derailleur hanger

Reviews