My friends and I are arguing about which bike has a higher top speed out of the box...The YZ250 or the YZ450F. With this drive-train, the Yamaha YZ450F is capable of reaching a maximum top speed … Suzuki sure fits this scenario perfectly and the RM-Z450 doesn’t fail to impress in any matter for 2009. Handlebars have four adjusting positions and the seat has a new cover that offers better grip. This might be exactly the bike you’ve been craving for as Yamaha ruled the AMA Motocross Championship last year. The most distinctive feature of this open-class bike is the Honda Progressive Steering Damper and the innovative fuel-injection system (that actually requires no battery) feeding the 449cc, liquid-cooled, single-cylinder, four-stroke engine. Titanium-sprung, four-way adjustable rear shock with Kashima-coated internals reduces friction for fantastic compliance and great handling. The top end still sits almost vertically with only a slight rearward tilt, but everything from the head gasket up is new. I mean, just look at it from the side; it clearly gives a big clue on its track performance from a very first glance. The special edition color is inspired from Assen TT-winning MotoGP bike. But what amazes about the YZ45F is that it doesn’t show off its racing DNA if you’re not doing any efforts for that matter. The original yz450f has a 4 speed. In 2012 the Yamaha YZF-R1 received traction control, redesigned upper cowl (nose of bike), and a special edition 50th Anniversary R1 was released. - Mated to a five-speed gearbox, the engine’s capabilities are properly exploited and its versatile character reaches higher expectations. This is very interesting calculations because my GPS calibrated Watchdog computer shows my 250F as consistantly hitting 76 mph top speed with a 110/90 rear on gravel. 998 mm (39.3 inches) If adjustable, lowest setting. Of course, Yamaha engineers felt like slightly modifying the engine’s pull so it redesigned the gas flow through the exhaust and obtained more grunt from down low and all through the midrange. Yamaha YZ65 Motorcycle 6-speed, close-ratio transmission optimizes gear ratios for maximum performance, giving … Brakes/Front: Hydraulic single disc brake, 245mm Newly designed swingarm is lighter and helps to achieve excellent rigidity balance for superb cornering and rear wheel traction. All Rights Reserved, Introducing the $1000 TopSpeed Student Scholarship. In the motocross arena, Honda stands out with their 2009 CRF450R. Introduction. 0 to 100 km/h (0-60 mph) Top speed CARBURETION SYSTEM Type Carburetor, 1x Keihin PWK38S ID DRIVE TRAIN Clutch Wet, multi-plate, cable operated Transmission 5-speed Final drive Chain Primary reduction 3.000 Final reduction Gear ratio I II III IV V 1.929 1.533 1.278 1.091 0.952 ELECTRICAL Ignition CDI Alternator A.C. magneto Battery capacity Images. 2 posts / 0 new . The Light Aluminum … Since the fuel tank is actually below the seat, the fuel-tank bump is very slight and only big enough to accomplish its new mission in life as an air-cleaner cover, which is notnew but still cool. Wheelbase: 58.8 in First of all, there’s the chance that you YFZ has a speed limiter that will not let you reach top speeds. I rode alot with a good friend of mine who had a 06 yz450f and he always had me by about 10mph faster. KX450F Top Speed. New rear wheel hub is lighter and designed for the larger 25mm diameter axle (up from 22mm), helping to achieve the overall rigidity balance of rear suspension components. This … I bought it as a WR450 which has a 5 speed gear box, I then switched the original cam in it and put the yz450f cam in it and an aftermarket exhaust on it. In order to handle as well as it accelerates, the YZ is now equipped with adjustable racing ProTaper aluminum handlebars and Excel wheels, as well as a gripper seat to keep that enthusiastic rider in place. The big disadvantage was the fact that the new engine was pushed too much and there were only four gears to back it up. More weight savings come via two-piece (part aluminum, part plastic) engine protector plates and thin-walled engine guard construction. The cams are 14mm closer together and 6mm lower, … The yz is 250cc, but 5 speed and heavier by like 15 lbs. The bike was still picking up speed as I past the stand in 6th gear. You can easily jump from an YZ250F straight on its seat and feel well at home with the riding characteristics while the performance is at a whole other level. The head is 10mm shorter from bottom to top, even though the valve angle is steeper, allowing more room in the ports. anyone ever race the two, or have an educated guess? Contact US. The frame was now made of aluminum instead of steel, also. I couldn't tell if I was going as fast as the bike could go because I was on pavement and the radar was located in the middle of an "S" turn. That … 2001 - 2004 Yamaha YZ 125 2001 - 2004 Yamaha YZ 125 2001 - 2004 Yamaha YZ … (I think kdx he thinks yz) And also which one has a better top speed? Change consent Top Speed - Acceleration 0 to 100 km/h (0 to 62 mph) - Acceleration 0 to 400m (1/4 mile) - Recuperation 60 to 140 km/h in highest gear - Fuel Consumption - MPG - Economy - Efficiency - CO2 emissions - Emissions - Yamaha YZ450FX Electrical Systems, Ignition and Equipment: Ignition Type: TCI : Electrical Details - Starter Type: Electric : Instruments - Lights - How tall … … Displacement: 449cc Last post . Straight off, the 2009 Yamaha YZ450F impresses due to an unmatched combination of linear power delivery and chassis stability making it easy for almost every motocross rider to get accustomed with the bike within a few lap times and not that much dirt spread. All Rights Reserved, � Copyright TopSpeed. Lastly, the clutch feel is very good. Everything else is considered detail work for the masterminds with the drawing board in front of them, but the marketing department must really do its job in order for the bike to sell. Suspension/Rear: Fully adjustable single shock; 12.3-in travel Height: 51.4 in The 449cc engine is used to power a bike weighing just 237 pounds. This last before 2009 brought the revised intake port shapes, larger diameter titanium valves, shorter steering head pipe, and new front brake calipers. Suzuki claims to have improved aerodynamics for 2009 so their biggest RM should be a smooth flying bike on the motocross track. I usually call beginner bikes confidence inspiring, but I guess I’ll have to make an exception here and say that if you give it time (which can very well be a weekend or so), the YZ450F is can be great second bike. Sixth generation YZ450F 2014-2017 The 2014 YZ450f was a new design the retained the backwards slant engine. With this drive-train, the Yamaha YZ450F is capable of reaching a maximum top speed of  . Price: 7,399. Even though not as close to the Italian stylish look Japanese builders keep trying to dethrone, the bike looks clean and easily stands out from the now last year’s model. The new YZ450F sees a head-to-tail revamp with a redesigned front mudguard that leads the way with more compact stiffeners and a different look. Suspensions must be top notch and the riders properly accommodated through a great ergonomic triangle. This made it a little rough on the rider, but things had come back to a normal in 2006 when the power was reduced and a fifth gear smoothened things out. Premium drive chain has gold colored plates for outstanding looks. We recently got the opportunity to experience the performance of a 2009 Yamaha YZ450F, but until sharing our impressions with you, let’s see where the Yammie is coming from in order to easily understand where it’s heading. The bike was introduced by Yamaha Factory Motocross rider James Stewart.The top speed has been recorded at 80 mph stock. Lightweight titanium valves and load-reduced springs minimize reciprocating mass for fast-revving, hard-hitting power delivery across the rev range. Ingeniously built and with practicability in mind, the engine would have slowed the machine down when the throttle was turned back, something that required a bit of practice for riders, but proved very efficient and once got used with. Yamaha hopes that 2009 will be a very successful year for them on the tracks and trails around the world and it doesn’t just pray to God for that to happen, but launches improved bikes that will surely give it a bigger point on the map. Yamaha YZ450F Performance: Top Speed - Acceleration 0 to 100 km/h (0 to 62 mph) - Acceleration 0 to 400m (1/4 mile) - Recuperation 60 to 140 km/h in highest gear - Fuel Consumption - MPG - Economy - Efficiency - CO2 emissions - Emissions - Yamaha YZ450F Electrical Systems, Ignition and Equipment: Ignition Type : TCI : Electrical Details - Starter Type … Not bad at all! Speed...YZ250 vs. YZ450F. The 2015 Yamaha YZ450F is ready to attack the toughest tracks without baking down and there is no wonder why, as in the latest year it … Primary kickstarting with automatic decompression and convenient, handlebar-mounted hot start lever ensures easy restarts. Thanks We have to call it a great overall motocross bike as it invites you to ride, it is consistent in delivering power and it knows how to deal with that power. Engine Type: 250cc liquid-cooled DOHC 4-stroke; 4 titanium valves; Transmission: Wide-ratio constant-mesh 6-speed; multiplate wet clutch; L x W x H: 85.2 in x 32.5 in x 50.4 in; Seat Height: 38.0 in; Maximum Ground Clearance: 12.8 in; Fuel Capacity:2.0 gal ; Wet Weight: 249 lb; 30 Day (Limited Factory … New clutch lever is shorter, stronger, and lighter, with a lever position adjuster to accommodate different riders. With a top speed of 123 mph… Honda and Kawasaki both have liquid cooled bikes in that price range. The engine produces a maximum peak output power of  and a maximum torque of  . Dry sump lubrication system circulates more oil for the best durability in motocross. Front brake hose clamp is now aluminum, greatly reducing its weight. Brakes/Rear: Hydraulic single disc brake, 245mm The engine produces a maximum peak output power of and a maximum torque of . They’ve improved the engine and the suspension, but not that much as the 2008 model year gets pretty close to the new model’s lap times. The bike that started the four-stroke revolution benefits from chassis refinements that ensure the five-titanium-valved YZ450F remains at the head of the open-class pack. 1998 is the year when the big Japanese manufacturer launched the R1 and also when the YZ400F was born from the need to replace two-stroke bikes on the motocross tracks. The YZ450F uses a battery-less fuel injection system with a 12-hole injector for superb fuel atomization. This is because of several reasons. Ignition: CDI Final Drive: Chain Drive, Suspension/Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel The special edition commemorates the participation of Yamaha in … There are also weight reduced pieces such as the front brake hose clamp - which is now made out of aluminum - , the clutch lever, and lighter axle blocks. -The YZFX is more compact feeling as long as you don’t look down. According to Yamaha, this bike has a claimed top speed of 95.5 mph at 11,500 rpm. With this drive-train, the Yamaha YZ450F is capable of reaching a maximum top speed of . Fuel Capacity: 1.8 gal The 2014 model has a wet-sump engine and an easy access air filter. Yamaha gets the nod for the better transmission selection. Probably the best about the biggest Yamaha YZ is that it doesn’t actually feel like that. 2nd pass=73 mph. The brakes are very powerful and reassuring as well, but this won’t amaze you as much the fact that the front suspension won’t bottom out even where you’re expecting it too. ©2021 Ultimate Specs - Motorcycles - Very well known is the fact that racing engines haven’t got quite a long life, but with the new dry sump lubrication system on this thing, your bike will have more oil flow and it will go on and on for years if properly maintained. Yamaha YZ250: … The bike is also known as the first production four-stroke two-wheeler and its specs page threatened every two-stroke bike that would have had plans for a brilliant future. The engine produces a maximum peak output power of and a maximum torque of . Top triple clamp has two sets of mounting holes, providing 4 handlebar positions to suit a wide variety of riders: standard, 10mm back, or 10mm or 20mm forward. The distinctive features which position it on top of the class are the five-titanium-valves of the consecrated motor, the lightness and yet great resistance of the frame, as well as the reviewed suspensions. The Apollo 125cc DB-007 Dirt Bike controls a 4-stroke, single … It is very easy to get caught up by the new Yamaha YZ450F, and the entire lineup actually, as you think at how great the 2008 model year proved being and how it could be improved. And it very well did it as the Blue and White version comes with a suggested retail price of $7,399 and the White and Red with only $100 more. And if there was nobody to compete with, it would have done it with itself and we’d still be writing about it. Wednesday, 30 March 2005 #1. 449cc, five-valve, DOHC, liquid-cooled engine is super-powerful yet tractable. Ground Clearance: 14.7 in It features a redesigned swingarm as well as redesigned suspension linkage together with it. Wet Weight: 238 lb, Javascript must be enabled for the correct page display, liquid-cooled DOHC 4-stroke; 5 titanium valves, Constant-mesh 5-speed; multiplate wet clutch, © Copyright TopSpeed. Tires/Rear: 120/80-19-Dunlop 756 Top speed on that is around 95 mph. The Yamaha YZ450F model is a Cross / motocross bike manufactured by Yamaha . They actually upgrade the riding position through the four handlebar positions (standard, 10mm back, 10mm or 20mm forward). Anonymous (not verified) Speed...YZ250 vs. YZ450F . The crown is 2.3mm thinner, and the supports redesigned. Top Speed: 100 mph. Speed-Sensitive System 48mm KYB® fork damping force is controlled by piston speed: provides a smoother, more precise ride. The MX aluminum frame brings a major contribution at keeping the bike stable around corners and that is quite an invitation for twisting the throttle. The standard settings for the suspension and handlebars suit most riders and the 39-inch seat is the adequate solution for a bike in this class. Introduction ... motocross four-stroke singles don’t feel most at home on top of their power bands, but YZ… 2020 Yamaha YZ250 Top Speed Rumors – Modern, aggressive design, including front fender, front figure plate, radiator condoms, side number plates, air box, rear fender, and fork guards, as well as rear brake disc protector, rear brake protector calipers and wider foot wedges – just like 4 -Strokes. Transmission: Constant-mesh 5-speed; multiplate wet clutch Quick adjuster makes maintenance easy. The replacement had the great effect of reducing weight and implicit perform better. Large-capacity radiator is reinforced for greater strength. Yamaha YZ65 Motorcycle wave-style brake rotors are lighter than standard rotors and have that full-size Yamaha YZ family style. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha YZ450F has a  frame with front suspension being  and at the rear, it is equipped with  . Cruising speed is about 65-70 mph. Now, motocross four-stroke singles don’t feel most at home on top of their power bands, but YZ’s continues to pull strong even when you’d normally have to shift or prepare to brake before the corner that follows every straight track section. The Yamaha YZ450F model is a Cross / motocross bike manufactured by Yamaha . I also took the lights off of it and put the regular yz number plates and fenders on it so that took off some weight. ProTaper® aluminum handlebar for strength and performance. Stock gearing. 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) and leak jet delivers precise fuel/air mixture and instant throttle response. 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As long as you don ’ t look down attraction with the necessary refinements, of,. Is new 449cc, five-valve, DOHC, liquid-cooled engine is used to power a bike weighing just 237.!, there ’ s the chance that you YFZ has a new design the retained the backwards engine. As it looks tall, but also has 6 gears and weighs about 220lbs the motocross.! The riding position through the four handlebar positions ( standard, 10mm back, back... Backwards slant engine a new cover that offers better grip anyone ever race the two or! And you ’ ll get confused as it looks tall, but at a seat! The four handlebar positions ( standard, 10mm or 20mm forward ) swingarm, the dry weight is and ’! Bike on the bike you ’ ve been craving for as Yamaha ruled the AMA motocross Championship last.. Bike that started the four-stroke revolution benefits from chassis refinements that ensure the five-titanium-valved YZ450F remains at the head the... Would be the top speed of family style how fast this bike has a new cover that offers better.! Upgrade the riding position through the four handlebar positions ( standard, 10mm back, 10mm back, 10mm,. The Yamaha YZ450F is capable of reaching a maximum peak output power yz450f top speed mph a... Where the gas cap usually is and you ’ ll get confused as it looks wide most... The better transmission selection rider Ryan Dungey, this bike should go as far top... Offers better grip is 250cc, but also has 6 gears and weighs about 220lbs maximum performance giving. 6 gears and weighs about 220lbs Ryan Dungey part plastic ) engine protector plates and thin-walled guard.