K2 PROFLEX 4500C 1998 VS Rocky Mountain ALTITUDE 50 2010 specs comparison

K2 ProFlex 4500C

General Infos

Model	ProFlex 4500C
Manufacturer	K2
Year of production	1998
Current price	Check price Here ==>
Color choice	-Natural carbon
Sizes	- Large - medium - way big
Sizes	- Large - medium - way big

Wheels And Breaking System

Bike front tire	26 X 2.10 (inches) Panaracer Duster II Kevlar
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Shimano Deore LX Levers Shimano Deore LX V-Brake Brakes
Hubs for disc brakes	Shimano Deore LX
Rims manufacturer	32-hole Sun Rims Sub 432
Spoke nipples type	Alloy Nipples
Spoke wheel	1.8 (millimeters) Double-butted DT Stainless Steel

Frame and Body Specs

Frame materials	Carbon-reinforced Thermoplastic
Frame type	Laminated Carbon Fiber
Handlebar construction	Titec Enduro 141
Handlebar extender	Aluminum
Handlebar stem details	Aluminum
Headset size	1 1/8" c

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) Sachs PC-51
Bottom bracket shell width	73 (millimeters) English
Bottom bracket type	113 (millimeters) Spindle Shimano BB-UN72
Crankset parts and sizes	22/32/42 Teeth Shimano Deore LX
Gear shift levers	Shimano Deore XT RapidFire SL
Rear gear set	11 - 30 Teeth 8-speed

K2 ProFlex 4500C Fork System Data

Derailleur (Front)	Bottom-pull and clamp-on 31.8 (millimeters) Shimano Deore LX Top-swing
Derailleur (Rear)	Shimano Deore XT SGS
Fork material	Linkage Crown Aluminum
Fork type	Noleen Cross-Link ELT

Other Specs of K2 ProFlex 4500C

Component group sets	Shimano Deore XT
Pedals details	K2 Mag C
Rear shock absorber	4.0 (inches) Travel Noleen NR-4 Piggyback
Saddle seat	Selle Royal
Seat post extension	27.2 (millimeters) Diameter Titec PG

Rocky Mountain Altitude 50

General Infos

Model	Altitude 50
Manufacturer	Rocky Mountain
Year of production	2010
Current price	Check price Here ==>
Color choice	-White
Sizes	- 15 (inches) - 16.5 (inches) - 18 (inches) - 19.5 (inches) - 20.5 (inches)

Wheels And Breaking System

Bike front tire	26 (inches) Continental Mountain King
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Formula RX Levers Formula RX Disc With 180 (millimeters) Rotor Brakes
Hubs for disc brakes	Rear: Shimano M525 Disc Front: Wheeltech Cartridge Disc 15 (millimeters) Axle
Rims manufacturer	Mavic XM317
Spoke nipples type	Not Available
Spoke wheel	DT Swiss Competition

Frame and Body Specs

Frame materials	RMB FORM 7005 Aluminum
Frame type	TIG-welded
Handlebar construction	Race Face Evolve XC Low-rise
Handlebar extender	Optional
Handlebar stem details	Race Face Evolve XC
Headset size	FSA Orbit MX

Gearing Specifications

Bicycle chain	Shimano HG-53
Bottom bracket shell width	Not Available
Bottom bracket type	Race Face Evolve XC X-Type
Crankset parts and sizes	22/32/44 Teeth Race Face Evolve XC X-Type
Gear shift levers	Shimano SLX RapidFire
Rear gear set	11 - 34 Teeth 9-speed

Rocky Mountain Altitude 50 Fork System Data

Derailleur (Front)	DMD Shimano SLX
Derailleur (Rear)	Shimano XT
Fork material	Single Crown Magnesium and aluminum
Fork type	140 (millimeters) Travel Fox 32 Float RL With 15QR Thru Axle

Other Specs of Rocky Mountain Altitude 50

Component group sets	Mountain Mix
Pedals details	Shimano PD-M520
Rear shock absorber	140 (millimeters) Travel Fox Float RP23
Saddle seat	WTB Silverado Race SL
Seat post extension	30.9 (millimeters) Diameter Race Face Evolve XC