Hardrock Disc 29
Part No.  

Hardrock Disc 29

Part No.  106749
Hardrock Disc 29
Technical Specifications
If you're looking to dip your toe in the dirt pool that is mountain biking, you came to the right place. After all, there's no better bike to get your feet wet with than the Hardrock Disc 29. With durable, performance-driven components, powerful disc brakes, a bump absorbing suspension fork, and Sport Trail 29 Geometry that's sure to leave you feeling confident and inspired, the Hardrock is punching well above its weight class. Go on, go out and get dirty.
  • The frame is constructed from A1 Premium Aluminum in order to provide a lightweight, durable platform to support our acclaimed Sport Trail 29 Geometry. Combined, you get a bike that's efficient on climbs and eager on descents.
  • 29" 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.
  • With reliable traction, puncture-resistance, and sheer speed over the dirt, our 29x2.0" Ground Control Sport tires will keep you rolling with confidence over almost any terrain.
  • SR Suntour XCT 29 fork features a coil spring that delivers 80mm of trail absorbing travel.

Technical Specifications

CHAIN KMC X8, 8-speed, w/ reusable MissingLink
BOTTOM BRACKET Square taper, cartridge bearings
CRANKSET Samox, forged alloy, 3 pc., 8-speed, 42/32/22T, w/ chainguard
FRONT DERAILLEUR Shimano Altus, 3-speed, top swing, dual pull
SHIFT LEVERS Shimano ST-EF51, w/ integrated brake lever
CASSETTE Sunrace, 8-speed, 11-34t
REAR DERAILLEUR Shimano Altus, 8-speed
FORK SR Suntour XCT 29, coil spring, 80mm travel, preload adjust, 1-1/8"" steerer, alloy lowers, Hi-Ten 28mm stanchions, disc mount
FRONT HUB Specialized, Hi Lo disc, alloy, double-sealed, ground race, QR, 32h
REAR HUB Specialized, Hi Lo disc, double-sealed bearing, QR, 32h
INNER TUBES Standard, Schrader valve
SPOKES Stainless, 14g
RIMS 29"", disc, alloy, double-wall, pin joint, 25mm inner width, 32h
FRONT TIRE Specialized Fast Trak Sport, 30TPI, wire bead, Flak Jacket protection, 29x2.0""
REAR TIRE Specialized Fast Trak Sport, 30TPI, wire bead, Flak Jacket protection, 29x2.0""
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, flat bar, alloy, 8-degree backsweep, 4-degree upsweep, 25.4mm
GRIPS Specialized Body Geometry XCT, Kraton w/ gel, lock-on, closed end
FRONT BRAKE Tektro Aries, mechanical disc, organic pads
REAR BRAKE Tektro Aries, mechanical disc, organic pads
PEDALS Plastic, 9/16"", w/ reflectors
HEADSET 1-1/8"" threadless, loose ball
SEAT BINDER Alloy, nylon/glass fiber washer, QR, 34.9mm
FRAME Specialized A1 Premium Aluminum, Sport Trail 29 Geometry, ORE down tube, externally relieved head tube, forged dropouts, reinforced disc mount, replaceable alloy derailleur hanger


Geometry Chart

Hardrock - Geometry

Stem Length 60mm 75mm 75mm 90mm 90mm
Crank Length 170mm 170mm 175mm 175mm 175mm
Seatpost Length 350mm 350mm 400mm 400mm 400mm
Handlebar Width 640mm 660mm 660mm 660mm 660mm
Reach 383mm 388mm 404mm 427mm 441mm
Stack 624mm 626mm 635mm 654mm 673mm
Wheelbase 1072mm 1072mm 1091mm 1122mm 1142mm
Bike Stand-Over Height 750mm 783mm 808mm 846mm 884mm
Head-Tube Length 100mm 100mm 110mm 130mm 150mm
Front-Center 646mm 645mm 664mm 695mm 715mm
Fork Rake/Offset 45mm 45mm 45mm 45mm 45mm
Head-Tube Angle 70.5° 71° 71° 71° 71°
Trail 84mm 81mm 81mm 81mm 81mm
B-B Height 301mm 301mm 301mm 301mm 301mm
Chain-Stay Length 450mm 450mm 450mm 450mm 450mm
Fork Length (full) 494mm 494mm 494mm 494mm 494mm
Seat-Tube Angle 73° 72° 72° 72° 72°
B-B Drop 68.5mm 68.5mm 68.5mm 68.5mm 68.5mm
Seat-Tube Length 394mm 444mm 483mm 533mm 584mm
Top-Tube Length (horizontal) 574mm 591mm 610mm 640mm 660mm