BUILDING A 2012 HONDA CRF450
A HotCams camshaft is a particularly cost-effective mod
for the Honda because you only have to buy one.
MX-Tech used a Merge Racing bell crank to slow the initial
shock speed and allow for more high-speed compression.
the four-spring CRF clutch has a very vague feel. Getting more power out of the bike would only further abuse the weak clutch. Similarly, getting the suspension dialed would be a hollow victory if I couldn’t anticipate traction and power enough to stay balanced on the bike. I started this project with a frugal mindset. What would I do if I were spending my own money? Yet, I knew that I had to spend money to bring everything up to snuff. I ordered a Wiseco inner hub, pressure plate and six new springs. The stock basket was not showing any signs of wear—although it will after more hours are put on the bike. I stuck with the stock clutch cover, because even though it looks beat up, it’s perfectly functional.
STEP TWO: TO FURTHER HELP THE
OVERALL PACKAGE, I CONSIDERED
SEVERAL POPULAR THROTTLE-CONTROL
Step two: To further help the overall package, I considered several popular throttle-control options. For the record, I’m an advocate of Injectioneering’s throttle-body modification. It definitely perks up the throttle response. Yet I decided not to go this route, because I didn’t want to go through the hassle of taking everything apart and shipping it off. Instead of going the Injectioneering route, I made an economical decision and installed a RollOn Throttle Lightning throttle tube instead. The Lightning’s throttle reel pulls more cable per degree of rotation. It is like the quick-turn throttle, and for $37, it is the poor man’s Injectioneering mod. I knew that some additional mods would be necessary to turn the mellow powerband into an aggressive one, but with the clutch and throttle tube, I ensured that whatever I decided to do to the powerband and suspension from this point on, I could get the power to the ground quickly and use throttle control to stay balanced on the bike.
STEP THREE: WHEN I FIRST SAW THE
PINHOLE-SIZED MUFFLER OUTLET OF
THE 2012 CRF450, I THOUGHT THAT
THE THING WAS MORE CHOKED UP
THAN WHEN I DECIDED TO CHOP
ONIONS AT JIMMY MAC,S WEDDING.
Step three: When I first saw the pinhole-sized muffler outlet of the 2012 CRF450, I thought that the thing was more choked up than when I decided to chop onions at Jimmy Mac’s wedding. (It’s a good cover-up; just say, “I’m not crying; it’s for the dip.”) Oddly, when the EFI CRF was introduced in 2009, the powerband was too snappy and aggressive for carburetor-accustomed riders. So, how in the world did it get to the opposite end of the spectrum? It has