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It's a missile that handles! By the Staff of DIRT WHEELS

D We just had to build a no-holds-barred killer The Honda ATC200X was our candidate; it oozes with potential It has mushman suspen­sion but a pleasant motor and is a gas to ride. Just imagine gobs more power, a stretched-out chassis, and suspension that would suck up a Grand Canyon hill Our minds reeled . .. .

A call was placed to the White Bros. Yes, they'd be happy to go mongo nuts on our 200X. We envisioned a kind of Baja Cross ma­chine. More motor was critical Just as impor­tant was the rear suspension: It must be able to track and absorb hits at speed. In stock trim the 200X fails miserably here. Yes, it's cushy, but that's the limit. The brothers White said to leave it to them. We did.

PULLING OUT THE STOPS They took out the engine and did a major on

it. First, a 12-to-l Wiseco piston kit was installed. The 66mm piston brought the bore up to 198cc. A White Bros. titanium valve spring kit was fitted along with a WB racing cam. The

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Our White Bros. 200X received a complete transfusion. The engine went on a fUll-tilt Nautilus program; a new shock, wider axle, low-profile rubber, and sano WB swingarm provided the final touches.

Our 200 throbs with a potent and usable powerband. It snaps off the bottom with a vengeance and cranks into atmospheric upper revs like a demon. ~

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MAY 19851 DIRT WHEELS 81

82 DIRT WHEELS / MA Y 1985

HONDA200X head was ported and flowed, and the valve seat and springs were ground and packed.

A 28mm flat-slide carb kit was installed, and a WE twist throttle setup replaced the standard thumb model. Two filters were mounted, one for the oil blow-off line and a large K&N c1amp­on air filter. White Bros. slipped on a Megalloy racing exhaust system to cap off the big engine mods.

A sana Derale oil cooler was popped on, and the front fender was slotted for increased airflow to the cooler. A trick oil· temperature gauge screwed into the oil filler cap, and a fold­ing shifter and case saver were installed.

- STORMIN' THE CHASSIS A beautiful White Bros. two-inches-longer­

than-stock aluminum swingarm was snugged into place. The stock shock was tossed in favor of a White Power Super Adjuster shock. The final ingredient for stability was the Dura Blue axle. A four-inch-wider-than-stock unit was chosen along with Mitchell 3 X 5 offset wheels and Armstrong Multi Trac tires.

For reliability a Tsubaki chain replaced the stockitem. Trick fork guards were mounted up front along with a Terry fork kit. Lastly, a reser­voir guard was bolted onto the front brake.

ENOUGH, HOW'S IT WORK? You can feel the added compression when

the kickstarter is stabbed. Our 200 fired up on the second prod and belched out a healthy

White B;os. mounted a White Power Super Adjuster shock which proved to be a major force in taming evil landscape. A K&N filter, WB throttle kit and front br(jke reser­voir guard cap off the package. The fork guards and front numberplate are practical as well as aesthetically pleasing. It oozes raw energy. ~

·Though the engine appears timid on the outside, a caged dragon lurks within. White Bros. implanted a racing cam, trick valves and springs, a high-compression piston and a 28mm Mikuni on the 200. Up front, a Dera/e oil cooler keeps the temper­ature down, and a thermometer is screwed into the oil filler cap so you can keep an eye on the heat. Check out the drilled front fender-trick.

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We tortured our 200X with relentless air shots. The added power during liftoff com­bined with a leaner, race-bred chassis made it perfect for aerial attacks. In the air it's as light and nimble as a glider.

roar from the Megalloy racing megaphone. We let it warm up, then aimed it at the track. Two sensations electrified us immediately: The stock electric motor feel was replaced by seri­ous thrust, and the machine felt wide and low

The first sweeper was attacked crazily. We slammed down the throttle and dangled off the side of the 200X. The rear danced sideways, and we held a perfect slide around the entire turn. The engine felt menacing; it was nudged into a higher gear The Honda bolted skyward as healthy chunks of real estate blew off the rear tires. '

Looming ahead was the King Kong jump. Normally; your throttle hand keeps the speed

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f"lere's a bug's eye view of the Bajacross tail section. With a wider stance (thanks to a four-inch-wider Dura Blue axle and offset Mitchell wheels laced with Armstrong tires to keep a grip on things), it's all business. The WB aluminum swingarm is two inches longer than stock and is a work of art. A super-strong Tsubaki chain handles the added boost of the engine. The mega­phone is a White Bros. Megalloy racing ex­haust that's beautiful to the eye and is another factor io the added thrust .

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\ 29mm Mikuni Square Slide and Manifold

ATC 200X PRO-Series Exhaust System , "

Pop Yoshimura is probably the world 'S most famous 4-stroke motorcycle tuner. His skills and teChnical knowl­edge, together with those of hiS employees, have made Yoshimura the most successful non·factory team in t he history of road racing. That pro· ven ability is now available to the ATV market with the in· troduction of a new system of matched hi-performance parts for Honda ATC 185 / 200X machines whiCh are guaran­teed to put yOU into the winner'S Circle!

Each Yoshimura part is de­signed and manufactured in Japan to performance and quality standards found only in official factory racing parts. Items like our lightweight forged Aluminum Fork Brace Kit, Twist Throttle Assembly and Alloy Steering Damper Kit have that "exotiC" factory look and function . Our High Com­pression Piston Kits and cam· shaft Kit w / Sprlngs offer the same ki nd of reliab le hOrse·

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FOX Twfn<lIcker Sho)(

HI-performance Engine parts

power advantage for ATCs that Yoshimura has been providing to the major factory roadrace teams in Japan for years.

Yoshimura PRO­Series Exhaust

If you're serious about extracting horsepower and reducing weight on your ATC 200X the place to begin is with Yoshimura's PRO­Series Exhaust. A dyno­tuned pipe painted KAL· GARO black is matched to one of our famous light­weight aluminum canister silencers. It'S the same silencer system we pioneered in road­racing and is found on our Na­tional Championship winning superbikes. used on a tuned

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Bri1itJed ' Brake Line Klt

ATC header system the low· restriction Silencer offers a rich mellow sound and a power advantage that'S just incrediblel ATC-OOl PRO-Series EKl'laust . . .. $99,50 ATt·D02 Mlkunl 28mm SQ f Sllde . 95.00 ATC-003 Mlkunl ManifolD . . . _ 24.95 ATC-004 FOX 2-<:lIcker Shox , . . . _ 395.00 ATC'lOl Aluminum Fork Brace 65.00 ATC·l02 Fork Air Balance Kit . 19. 50 ATC·l03 Steering Damper Kit . 99.50 ATC- l 04 HO Handlebar Clamps .... 19.50 ATC-10S TwiSt Throttle /Cable , . , .. _ _ 19.95 ATC-l06 Heavy Duty Rear Hub§ __ _ 64,50 ATC'107 Heavy Duty Front Axle .. 24.95 ATC' l OS 198cc Big Bore Kit . , 69.50 ATC·109 20Scc 81g Bore Kit . , . .. 69.50 ATC·l10 12:1 Race Piston Kit , . 65.00 ATC·l11 4" & 6" HO Rear Axle . 185.00 ATC·l12 Race cam w f Sprlngs . . , .. 65.Go ATC'lU HD Clutch w /Sprlngs .... , ... 34.50 ATC-114 Sprocket l1T, 12T, 13T . , . .. 9.95 ATC·115 sprocket 36, 38, 40, 42T 19.95 ATC·116 Red " Z" Chain 520)(100 . 45.00 ATC'117 Steel Brake Line Kit .,.,.",. _ 95.00

ORDER TOLL FREEl (SOO) 634·9166 In CA (714) 628-4722

YOShimura Research and Develop­ment of America, 4555 Carter Court, Chino, CA 91710. Visa and MasterCard or UPS C.O.D. T-Shirts 59.9S 1+51.50 shipping, CA add tax) in Red or White, S,M,L,XL

33 Page Catalog

MA Y 1985 / DIRT WHEELS 83

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THE

• Tires (every type) • Bills Famous Pipes • Steel & Aluminum

Wheels • Axles • Mud Kits • Wheel Spacers • Skid Plates • Steering Dampners • Racing Reeds • Cams • Clutches • Chain & Sprockets

AND LOTS MORE * Sales & Service*

We have the Largest Selection of Quality 3 Wheeler Parts & Accessories in Canada. "IN STOCK NOW"!

MAIL ORDER: • Fast Shipment Anywhere in Canada • Money Order or C.O.D. Personal Cheques DELAY your order Three Weeks

HONDA200X

down. We hunched down and shot off the top of the mountain like an Olympic ski jumper. The landing would tell the story about the sus­pension mods. As the rear wheels touched down, the expected crunch of an overstressed shock never happened. The fourth-gear vault was soaked up with ease.

BOTTOM-LINE TIME The White Bros. built a 200X that bubbles

with horsepower and flattens ugly terrain like a bulldozer. It's a racer all the }Nay, although the power is ridable and torquey. There is tons of boost on tap, and once the upper revs are reached, things really start to happen-fast. Our 200 has been flogged mercilessly since the White Bros. kitted it. We haven't touched a wrench and have had no blown head gaskets or lunched engines. It's as reliable as a tractor.

"FREE" Price List or send $2 for our Catalogue.

We felt that the handling gains were just as impressive The longer swingarm, White Power shock, Dura Blue axle and low-profile rubber let us slide like lunatics and jump with reckless abandon. If your 200 already has a modified engine, we suggest you check into the chassis mods. It's not just a short-course "slider, but a bump monger too. The bottom line is this: The White Bros. cover the entire spectrum. They build an engine that's lightning fast and reli­able. Their chassis updates have turned the stocker from fun to awesome. What more could you ask for? 0

ALL TERRAIN CHARLIE'S 225 Cobequid Rd., Lower Sackville, Nova Scotia B4C 3J7 1-902 -864- 2832

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Sunday Closed

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Order Toll-Free: 1-800-692-2846 (In IL 1-312-543-6696) 111 Fairbanks. Addison, IL 60101

84 DIRT WHEELS/MAY 1985