Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Wheels 27.5" -
Travel Front 75mm -
Fork SunTour
-
Groupset Tourney, Shimano -
Suspension Hardtail -
Drivetrain 3 × 7 -
Brakes Mechanical Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
A1 Premium Aluminum, forged 3D drop outs, reinforced disc mount, alloy replaceable derailleur hanger
Suspension Fork
SR Suntour M3030 650b, 1-1/8"" steel steerer, 75mm of travel, 9mm axle, coil spring w/preload adjust
Drivetrain
Rear Derailleur
Shimano Tourney, 7-speed
Front Derailleur
Shimano Tourney, top-swing, 34.9mm clamp, 7-speed
Shift Levers
Shimano EF500, EZ Fire Plus, 7-speed
Cassette
Sunrace, 7-speed, 11-34t
Crank
Samox, forged alloy, square taper spindle, 42/34/24T w/chainguard
Bottom Bracket
Square taper, 73mm, internal bearings
Chain
KMC X8, 8-speed w/reusable MissingLink
Pedals
Specialized MTB, platform w/molded pin, Cr-Mo spindle
Wheels
Front Hub
Specialized disc, double-sealed, loose ball bearings, 9mm QR
Rear Hub
Specialized disc, loose ball bearings, QR, 32h
Rims
650b, disc, alloy, double-wall, pin joint, 25mm inner width, 32h
Spokes
Stainless, 14g
Tires
Fast Trak Sport, 650bx2.0"", 60TPI, wire bead, Flak Jacket protection
Brakes
Brakes
Tektro MD-M280, mechanical disc, 160mm rotor
Cockpit
Stem
3D-forged alloy, 31.8mm clamp, 6-degree rise
Handlebar
Flat bar, double-butted 6061 alloy, 700mm width, 10-degree upsweep, 4-degree upsweep, 31.8mm
Grips
Specialized MTB Grip, lock-on
Seat
Saddle
Body Geometry mountain, steel rails, 143mm
Seatpost
Alloy, 12mm offset, 2-bolt clamp, 30.9mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.58 mm | 1.49 mm | 1.42 mm | 1.36 mm | 1.34 mm |
| Bottom Bracket Height | 305 mm | 305 mm | 305 mm | 305 mm | 305 mm |
| Front Center | 612 mm | 633 mm | 652 mm | 671 mm | 697 mm |
| Rake | 48 mm | 48 mm | 48 mm | 48 mm | 48 mm |
| Trail | 75 mm | 75 mm | 75 mm | 75 mm | 75 mm |
| Stack | 581 mm | 581 mm | 581 mm | 581 mm | 600 mm |
| Reach | 368 mm | 389 mm | 408 mm | 427 mm | 447 mm |
| Top Tube Length | 535 mm | 556 mm | 586 mm | 605 mm | 631 mm |
| Seat Tube Angle | 74 ° | 74 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 313 mm | 373 mm | 432 mm | 460 mm | 510 mm |
| Head Tube Angle | 70.5 ° | 70.5 ° | 70.5 ° | 70.5 ° | 70.5 ° |
| Head Tube Length | 100 mm | 100 mm | 100 mm | 100 mm | 120 mm |
| Chainstay Length | 423 mm | 423 mm | 423 mm | 423 mm | 423 mm |
| Wheelbase | 1030 mm | 1051 mm | 1070 mm | 1089 mm | 1115 mm |
| Bottom Bracket Drop | 48 mm | 48 mm | 48 mm | 48 mm | 48 mm |
| Standover Height | 685 mm | 722 mm | 759 mm | 773 mm | 811 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
Model Overview
Hardrock Disc 650b completes the Specialized Hardrock model. Specialized released 33 bikes variations of this model so far. You can easily view all of the Specialized Hardrock bikes models from 2017, here.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Crosscountry bikes average price
According to our calculations, the average cost of a Crosscountry bike that is reliable is 1905$. However, even if your budget is less than the average, you might still be able to get a top-quality Crosscountry bike. In conclusion, always check bike reviews and their components before making a purchase to make sure you don’t overpay.
Hardrock Disc 650b components
Fork
Specialized Hardrock Disc 650b 2017 bike is equipped with the SunTour fork, and has 75mm travel. Bike forks absorb the shocks and give you a smooth and pleasant ride. To sum it all, when buying a bike, ensure that you look for a fork capable of decent travel.
Fork material
The fork is made out of steel, so, it can add some extra weight to your bike. However, steel is a pretty tough and durable material.
Wheels
The wheels on Hardrock Disc 650b are the 27.5″ aluminum type. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The Hardrock Disc 650b comes with Mechanical Disc brakes. They are much easier to maintain than hydraulic disk brakes. However, they don’t have the stopping power of hydraulic brakes.
Sizes
Specialized Hardrock Disc 650b bike has 5 sizes, in the range of 156 cm – 195 cm (5.12 ft – 6.4 ft). In conclusion, finding one for you shouldn’t be a problem.