Don’t be too confused by the number of the clickers on
the reservoir. Honda moved the rebound clicker up.
The 2015 CRF450 shows a higher level of interest in producing more horsepower. The mods include an innovative Engine Mode
Select button that allows the rider to easily select
from three different maps, revised settings on the
Dual-Timing EFI fuel-injection system, a new right-side exhaust pipe and redesigned cylinder head.
The emphasis on power is contrary to Honda’s
previous statements about not being interested in
making powerful bikes, but instead focusing on
20 NEW THINGS ON THE 2015 CRF450
1. New cylinder head for more top-end power, and
added over-rev features right-side exhaust port to
accommodate the new exhaust system.
2. New exhaust system uses larger-diameter pipe
and exhaust outlet to aid top-end power.
3. Overall exhaust system length is much shorter
and closer to the bike’s center of mass for more agile
4. Revised ignition map settings and new
settings for the Dual-Timing PGM-FI fuel injection
help increase power.
5. Peak power hits earlier in the rev range and
carries longer than before.
6. New piston is even stronger, thanks to a new
7. A new Engine Mode Select button—an industry
first among motocross machines—allows the rider to
easily select one of three different EFI/ignition maps
to match various track/riding conditions.
8. The HRC accessory tuning tool can be used
to program custom maps actuated by the Engine
Mode Select button.
9. A new ACG flywheel incorporates more mass
for smooth power delivery and enhanced low-end
response, making the engine less prone to stalling
10. Transmission gears are stronger for added
11. Softer throttle return spring gives a lighter
12. New clutch cable design gives a lighter pull
at the lever.
13. Revised Kayaba Pneumatic Spring Fork
(PSF) now offers five ways to adjust performance:
high-speed and low-speed adjusters for both rebound
and compression damping settings, plus air-spring
14. Redesigned fork damper cartridge and other
changes in fork construction yield a weight savings
of more than 7 ounces.
15. Rebound damping adjuster is now located on
the upper shock body.
16. 260mm front brake rotor for more stopping
17. Dunlop Geomax MX52 motocross tires, front
and rear, offer improved traction in a wide variety
18. Front brake guide and radiator grill now
feature a black finish.
19. New fork guards.
20. Bold new CRF graphics.