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2005

WE TEST THE 2005 YAMAHA YZ250

Yamaha spent millions of dollars on the development of the most advanced two-stroke motocross bike in motocross history at the exact moment when two-stroke sales hit the dumpster

MXA PRODUCT TEST: DIRT TRICKS KTM CAM CHAIN TENSIONER:

WHAT IS IT? Dirt Tricks? automatic KTM cam chain tensioner uses oil pressure, combined with a mechanical ratchet system, to maintain constant pressure on the timing chain (and avoids the possibility of the cam tensioner collapsing during oil pressure fluctuations). WHAT’S IT COST? $69.95. CONTACT? www.dirttricks.com or (775) 267-6361. WHAT STANDS OUT? Here’s a list of things that stand out with the Dirt Tricks automatic cam chain tensioner.      (1) Oil pressure . The stock KTM …

KXF/RMZ 250F 4-STROKE PISTONS

NOW AVAILABLE are the PRO-X 4-Stroke piston kits for both RMZ & KXF 250F models. NIKS PRO-X pistons are manufactured in Japan and are designed to be an O.E.M. replacement. The pistons are supplied in a Kit Package that includes rings, wrist pin and circlips. The KXF/RMZ250F PRO-X pistons feature the following:  The forged pistons are molded according to original specifications with performance upgrades to enhance reliability.  Aluminum Alloy maintains or exceeds factory specifications. &nb…

HONDA SPECS OF THE 2005 CR125R

An all-new 125cc engine makes the 2005 Honda CR125R the most potent two-stroke in its class. Features & Benefits New for 2005 – New crankcase intake tract and six-petal reed valve for more efficient air flow and improved drivability. – New thicker reed plates for better off-idle response. – Redesigned cylinder and cylinder head for improved power. – New crankshaft design for improved performance. – New piston features single keystone piston ring for improved sealing. – Revised coolant flow for impro…

HONDA SPECS OF THE 2005 CR250R

A completely new engine design and a host of chassis improvements create a brand-new CR250R–a machine destined to be a winner in 2005. Features & Benefits New for 2005 – New cylinder design features RC exhaust valve housed in removable case for improved sealing and performance. – New precision-cut stainless steel cylinder base gasket and revised port timing for improved bottom-end and mid-range power. – New cylinder head combustion chamber shape for improved bottom-end and mid-range power. – New on…

2005 HONDA CRF250R

Racing improves the breed, which means this class-leading front runner enters 2005 with a host of new features plus a lighter weight. Features & Benefits New for 2005  New cylinder head porting for increased power at lower rpm.  New camshaft profile increases low-rpm torque while maintaining maximum horsepower.  New ignition map works in conjunction with new cylinder head and camshaft for improved power at virtually all engine speeds.  New spark plug with side electrode for improved spark and co…

2005 HONDA CRF450R

Honda’s race-proven superstar, the CRF450R enters 2005 with a wealth of refinements and a lighter weight that make this big four-stroke the overwhelming class favorite. Features & Benefits New for 2005  New fourth-generation twin-spar aluminum frame. Forged aluminum steering head and tapered downtube section are designed to optimize frame rigidity. In addition, tall swingarm pivot plates and thin frame spars create a narrow overall frame cross-section for superb rider comfort and maneuverability. …