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CRF250R SPORTS PLENTY OF UPGRADES FOR 2008 |
CRF250R SPORTS PLENTY OF UPGRADES FOR 2008
Featuring blazing 4-stroke engine performance and a unique dual silencer
exhaust system, the hard-charging CRF250R delivers up a potent blend of
quick-revving, race-bred 4-stroke performance and crisp, responsive
handling that dominates the motocross circuit’s tight berms and big air
jumps.
Like its bigger brother – the CRF450R – the 250’s lightweight and rugged
aluminium frame and fully optimised suspension systems are now
complemented by an amazing new Honda Progressive Steering Damper (HPSD).
The HPSD extends one’s riding capabilities with smoothly assured
handling
through the roughest track conditions, providing amazing control that
smokes the competition right out of the box.
The earliest versions of HPSD first saw action aboard the American Honda
Racing Team’s CRF450R and CRF250R race bikes during the 2004 AMA
Supercross series. Ongoing development work saw HPSD installed on
additional Honda Works motocrossers including Europe’s highly successful
World Motocross contenders, Team Martin Honda.
This intensive four-year period of development and testing of various
damper settings under top-level racing conditions led to a finalised
design and integration on the 2008 models.
Team Honda riders have also discovered that use of HPSD permits the use
of
distinctly stiffer front suspension settings than had been possible
without the steering damper.
All of this highlights the benefits of Honda’s innovative engineering,
as
do the various additional upgrades that have been made to the ’08 CRF250
including:
New piston with 13.1:1 compression ratio
New cylinder head porting for improved power
Lighter weight valve train components raise rev limit to 13,500 rpm
Lighter weight counter-balancer shaft and drive gears
Dual-muffler exhaust system centralises mass and reduces turning inertia
Revised camshaft timing for added power
Revised carburettor jetting gives smooth power delivery under all riding
conditions
Engine torque now reaches maximum at 8,500rpm
Clutch features judder spring for smoother engagement
Front fork triple-clamps feature 22mm offset for improved cornering
Showa fork features a larger cartridge rod and new cartridge oil piston
for improved oil flow and less friction, plus stiffer springs for
improved
mid-stroke action
Rear damper valving matches changes to front fork
Works-style front and rear brake rotors reduce unsprung weight
Rear fender shape for improved mud protection
Larger left-side engine guard
Along with these new features, the CRF250R continues to offer superior
Honda technology such as a magnesium ACG cover, clutch cover and
cylinder-head cover to reduce engine weight, as well as a lightweight,
compact, internal, auto decompression system and handlebar-mounted
hot-start system providing for superb operation.
The bike’s twin-sump lubrication system separates the oil supply for the
crankshaft, piston and valve train from the clutch and transmission.
This
ensures a cool supply of oil to the clutch, eliminates clutch and
transmission material contamination of the engine oil, and reduces the
amount of circulating oil, which permits the use of a smaller oil pump.
With Honda Racing inspired graphics, the fourth-generation Twin-Spar
Aluminium Frame sporting a forged-aluminium steering head supports a
large
25mm rear axle diameter that provides significant rigidity to withstand
torturous track conditions.
A 50mm rear shock damper piston diameter also offers consistent
performance under demanding riding conditions, whilst the compact
twin-piston front brake calliper, anodized-aluminium brake pistons and
lightweight front brake disc minimize unsprung weight for improved
turning
and handling.
The CRF250R will be available from Dealers mid October (RRP to be
advised).
For information and specifications, go to: www.hondamotorcycles.com.au
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