TransWorld MX gave our RT-99 a test drive.

They gave us 9.5 out of 10 one if the highest rated exhaust systems they have ever tested.

// WHAT IT IS: The Jardine RT99 system is Jardine's latest offer for today's

advanced four-strokes. The system is made out of a stainless steel

header and mid pipe mated up with an aluminum muffler. Perhaps one

of the most noticeable features of the RT99, however, is the resonance

chamber on the header pipe. This chamber is designed to cut sound

down to 99 decibels while also adding meaty low-end grunt. All told,

this complete exhaust system is made with the amateur racer and casual

rider in mind who wants a quieter system with great performance.

// HITS: After bolting the system up to our test bike, the first thing we

noticed was the throaty yet subdued exhaust note that resonated from

the aluminum muffler. Once out on the track, the power benefits of the

system shone through. Just like Jardine claims, the RT99 adds more

power to the low end, in the form of a harder initial hit, and continues

up throughout the powerband. In stock trim, the '09 KX450F power isn't

overly aggressive. With the RT99 installed, the power of the big KXF is

woken up, allowing the bike to be ridden more aggressively. But while

the system does add power, it doesn't do it in an unmanageable manner,

which is something we look for in exhaust systems for the powerful

450cc four-strokes. Because at the end of the day?and in the waning

laps of a moto?who really wants a bike that you can't hold on to?

// MISSES: It's difficult to find a fault in this setup. But the weight of

the stainless steel and aluminum is a little much, and isn't significantly

lower than stock.

// THE VERDICT: For the money, the Jardine RT99 is an excellent

choice for anyone looking for additional power gains on his or her

bike. It adds power and gives the bike an authoritative grunt that

commands attention. Also, even though the entire system is a little

on the heavy side, it makes up for it in durability and price.

Call 951/371-1623 or visit www.jardineproducts.com

JARDINE RT99 STAINLESS/ALUMINUM EXHAUST SYSTEM

APPLICATION: Available for most late model mxers (tested here on the 2009 Kawasaki KX450F)

PRICE: $560 ($580 for 2009 Honda CRF450R)

RATING: 9.5

9.5

MISSES: It's difficult to find a fault in this setup. But the weight of

e stainless steel and aluminum is a little much,

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