2005 CR125R PRESS INFORMATION Motivated by its all-new RC-valve-equipped 2-stroke engine for a stronger, more widely useable power delivery, a slimmer, easier-manoeuvring chassis configuration and progressive Works-class suspension systems, the new CR125R provides a winning combination of blistering performance and crisp, confident handling to tear over the rough spots and through the corners quicker than anything it its class. Colours • Extreme Red (with White number plate and sidecovers) 2005 CR125R - E1 Features and Benefits New Features • New crankcase intake tract and six-petal reed valve for more efficient air flow and improved driveability. • Redesigned cylinder and cylinder head for improved power. • New crankshaft design for improved performance. • New piston features single keystone piston ring for improved sealing. • New thicker reed plates for better off-idle response. • Revised coolant flow for improved engine cooling and increased engine performance. • New RC valve changed from electrical motor-drive to governor actuation for better sealing and improved power characteristics. • New carburettor jetting specifications to match new engine characteristics. • New shift fork shaft, shift forks and shift drum for improved shifting performance and enhanced durability. • Thicker radiator core (from 24mm to 28mm) improves cooling capacity to handle extra power. • ACG rotor weight increased to improve driveability. • New swingarm features a dual-axis, double-taper design with a large cast aluminium cross member that is lighter weight and stronger. • New rear hub is stronger and lighter. • New Honda Racing-inspired graphics. Engine/Drivetrain • New liquid-cooled two-stroke single-cylinder engine with 54 x 54.5mm bore and stroke and 8.6 : 1 compression ratio. 2005 CR125R - E2 • NiCaSil-plated cylinder reduces friction and heat to improve overall performance. • Piston ring groove is anodised for added durability. • Air intake boot reshaped for more direct airflow and better low-speed engine performance. • Foam gasket between airbox and air boot for better sealing and airflow management. • 38mm Mikuni TMX carburettor with throttle position sensor (TPS). • Carbon fibre six-petal reed valve with sub-reeds is designed for better top-end and low-end power. • RC-style exhaust valve features a new rotary flap design with mechanical control that provides a smooth power transition between low- and midrange engine speeds. Redesigned exhaust valve flap features more overlap to minimise exhaust gas leakage between flap and cylinder. • Exhaust header designed to improve low-end and over-rev power delivery. New expansion chamber design enhances the engine’s power output and delivery. • New four-pole ACG design produces a high-voltage spark throughout the rpm range with low magnetic drag, thus permitting a freer-revving engine. • Digital ignition CPU features 16-bit processor for instantaneous data calculation and extremely accurate ignition timing. • Eight-plate clutch provides significant surface area to handle the engine’s torque. Clutch springs provide a light feel at the lever. • Dual radiators permit forward engine placement while providing significant cooling capacity. • Steel water-pump gear and steel kickstarter-shaft collar enhance reliability. • Final 13T/52T drive gearing complements the engine’s power characteristics for strong acceleration. • Durable 5-speed close-ratio transmission offers consistent performance in demanding racetrack conditions. • Primary kickstarting system allows starting in any gear. 2005 CR125R - E3 Chassis/Suspension • CR125R’s 3rd-generation twin-spar aluminium frame features taller swingarm pivot plates and thinner frame spars to create a narrower overall frame cross-section, and is also lighter than its earlier configuration. • Semi-double-cradle design features a single, large-diameter tapered downtube. Two rugged box-section rails attach to the base of the downtube and support the engine. A forged aluminium steering head provides a compact and extremely durable mount for the frame spars and engine downtube. • Inverted Kayaba fork features a new twin-chamber design with compression sub- cylinder for improved fork action. Inner surface of fork’s outer tubes is honed to retain a thin coating of lubricating oil to reduce friction with fork bushings. • Pro-Link rear suspension system features a single, fully adjustable Kayaba rear damper with 320mm of wheel travel, separate low-speed (18-step) and high-speed (2 turns) compression damping adjusters, and 30-step adjustable rebound damping. The adjusters are located together in a concentric design, with a screw inside a nut. • Front and rear wheels feature lightweight aluminium spoke nipples to help reduce unsprung weight. • Optional 20" front wheel improves cornering traction and rider comfort. • Large, 240mm front and rear brake rotors stopped by a compact and highly responsive dual-piston front brake calliper and lightweight single-piston rear calliper for optimum braking control. • Lightweight rear brake system integrates the rear master cylinder and fluid reservoir, eliminating the need for a remote master cylinder reservoir and hose assembly. Additional Features • Seat follows the shape of the fuel tank, providing a smooth transition to increase rider mobility and comfort. • Non-slip seat cover enhances rider control. • Wide, cleated stainless steel footpegs are self-cleaning, resist corrosion, provide excellent grip and fold for extra ground clearance. 2005 CR125R - E4 • Cleated rear brake pedal, shift lever and folding shift lever tip are made of lightweight aluminium. • Adjustable front brake lever for optimum control. • Quick-adjust clutch perch. • Aluminium Renthal handlebar is rubber-mounted to reduce rider fatigue and improve comfort. • CR handlebar holders provide three different mounting positions: standard CR125R holder provides a 3mm rearward offset and can be rotated 180 degrees to position handlebar 6mm forward. Optional holders (CR250R-type) provide neutral position to match rider preference. • Works-type handlebar grips add to rider comfort. • Front disc brake cover helps protect rotor and calliper from damage. • Removable rear sub-frame allows easy maintenance. • Dunlop D742 front and D756 rear tyres provide optimum traction and cornering. • Washable, two-stage foam air filter for optimal engine protection and easy maintenance. • Repackable silencer for maximum performance and minimal noise. • Stainless steel clutch cable for long life. 2005 CR125R - E5 Specifications CR125R (ED-type) Engine Type Liquid-cooled 2-stroke single with RC exhaust valve Displacement 124.8cm3 Bore x Stroke 54 x 54.5mm Compression Ratio 8.6 : 1 Max. Power Output 31.3kW/11,500min-1 (95/1/EC) Max. Torque 21.2Nm/10,000min-1 (95/1/EC) Carburation 38mm Mikuni TMXX flat slide carburettor with Throttle Position Sensor (TPS) Ignition System Digital electronic with 3-D mapping and electronic advance Starter Primary kick Drivetrain Transmission 5-speed Primary Reduction 3.150 (63/20) Gear Ratios 1 2.308 (30/13) 2 1.867 (28/15) 3 1.529 (26/17) 4 1.294 (22/17) 5 1.130 (26/23) Final Reduction 4.000 (52/13) Final Drive #520 roller chain Chassis Frame Semi-double cradle; aluminium twin-spar Dimensions (LxWxH) 2,160 x 821 x 1,282mm Wheelbase 1,468mm Caster Angle 25˚ 46' Trail 102mm Seat Height 954mm Ground Clearance 352mm Fuel Tank Capacity 7.7 litres Dry Weight 88.7kg Kerb Weight 97.6kg 2005 CR125R - E6 Suspension Type Front 46mm Kayaba inverted leading-axle twin-chamber cartridge- type telescopic fork with 20-step adjustable compression and 18-step rebound damping; 305mm axle travel Rear Pro-Link with Kayaba single damper, adjustable low-speed (18- step) & high-speed (2-turn) compression and 30-step rebound damping; 320mm axle travel Wheels Type Front 21 x 1.60 aluminium rim/wire spoke Rear 19 x 1.85 aluminium rim/wire spoke Tyres Front 80/100–21 51M Rear 100/90–19 57M Brakes Type Front 240 x 4.5mm hydraulic disc with dual-piston calliper and sintered metal pads Rear 240 x 4.5mm hydraulic disc with single-piston calliper and sintered metal pads All specifications are provisional and subject to change without notice. 2005 CR125R - E7
"honda CR125R 2005 Specifications"