'04 R1 Pic/info - Sportbike Forum: Sportbike Motorcycle Forums
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post #1 of 6 (permalink) Old 09-14-2003, 12:24 PM Thread Starter
Join Date: Jun 2001
Posts: 1,148
'04 R1 Pic/info

2004 YZF-R1

New from the ground-up design is lighter and incredibly powerful-as well as more
beautiful aesthetically, aerodynamically and ergonomically.

Lay-down cylinder block and resulting narrow frame produce a 4-cylinder bike that's
slimmer and more compact than ever.

Completely redesigned short-stroke 998cc, DOHC, 20-valve, liquid-cooled, inline 4-
cylinder engine now produces 180 horsepower at an amazing 12,500 rpm (with Ram-

All-new, 27mm narrower fuel injection system uses motor-driven secondary throttle
valves and 32-bit ECU for super-responsive, instantaneous power delivery.

Two-piece ergonomically designed fuel tank carries fuel in the rear section, for good
centralization of mass, while the front half contains a new, Ram-Air-fed airbox for
increased power.

Re-angled cylinder head-40 degrees forward instead of 30-optimizes weight
distribution, straightens intake tracts for improved cylinder filling, and allows frame to
pass over instead of around the engine for great strength.

Radical new closed-deck cylinder block reduces cylinder pitch, allowing an engine with
3mm wider bores to grow only 2.8mm wider instead of 12mm.

Narrower-angle 5-valve combustion chambers produce a highly efficient 12.3:1
compression ratio. Bigger valves and intake cams with more lift and duration flow more

16% lighter crankshaft, 3% lighter forged pistons, and 9% lighter 7.5mm shorter
carburized connecting rods with perfectly mated big ends add up to a quicker-revving
engine with excellent high-rpm durability.

High silicon-content ceramic-composite cylinder sleeves ensure greater heat dissipation
for consistent power delivery and reduced friction.

Strong, yet lightweight clutch and close-ratio 6-speed gearbox with triangulated shaft
layout for increased strength, compactness, and quicker acceleration.

Titanium underseat exhaust system (except for stainless steel midpipe with catalyst)
contains a new titanium EXUP valve for a broad, seamless powerband.

High-efficiency curved radiator and an aluminum liquid-cooled oil cooler maintain
stable operating temperature.

Direct ignition coils, new dual-electrode spark plugs and high-output magneto deliver
more reliable firing.

AC generator moves behind cylinder block for a narrow engine with excellent cornering

All-new, aluminum Deltabox main frame rails pass over the engine instead of around it, resulting in a structure that's 200% more rigid vertically, 50% stiffer laterally, and 30%
stiffer torsionally.

Overall frame width is reduced from 464 to 395.6mm, which produces more
comfortable ergonomics as well as more efficient aerodynamic penetration.

All-new, Controlled Fill die cast, truss-type swingarm is 30% stronger and long for
optimal traction and feedback.

Front-end geometry with 5mm more fork offset and reduced trail from 103mm to 97mm
for increased maneuverability.

The rider is repositioned for greater comfort too: Clip-on handlebars are 10mm higher,
footpegs are 2.5mm further forward and 7.5mm lower, and the fuel tank is narrower.

Controlled Fill die cast, detachable aluminum subframe is light, strong and allows easy
rear shock access.

Rear brake caliper is 12% lighter and rear disk is 10 grams lighter.

Dual 320mm front disc brakes; lighter/stronger, forged one-piece radial-mount calipers
and Brembo radial-pump front master cylinder with adjustable lever delivers great
braking controllability.

Fully adjustable KYB inverted telescopic front fork gets stiffer springs, 4.7" of travel,
and rigid 43mm tubes.

Piggyback rear shock gets a stiffer spring, 5.1" of wheel travel, full adjustability and a
lightweight, accessible aluminum preload adjustment collar.

New, 5-spoke wheels are 10% lighter in front and 7.5% lighter in rear for improved
acceleration, deceleration, handling and suspension action.

Underseat titanium exhaust system is lightweight, reduces drag, enhances mass
centralization, allows 56 degrees of cornering clearance-and adds to R1's predatory
Additional Features:

Two multi-reflector and two projector "Gatling-beam" headlights provide great
illumination and distinctive style.

New instrument panel with adjustable LCD illumination and multi-function digital
gauges: odometer, dual tripmeters, water temperature, air temperature, full-time clock
and lap timer. Large 15,000 rpm analog tachometer with adjustable shift light.

Aggressive new bodywork for improved aerodynamics with twin Ram-Air intakes for
increased engine performance.

LED taillight is light, bright and highly efficient.

Sticky 120/70-ZR17 and 190/50-ZR17 radial tires for incredible grip and precise

Forged footpegs are extra durable and light.

Extensive use of hollow bolts and lightweight fasteners help trim overall weight.

8.2 AH battery is more compact and 25% lighter.

California emission compliant.

Durable #530 O-ring-sealed drive chain.

Standard toolkit located in convenient storage compartment under passenger seat.
Available Accessories
Please see accessory literature for availability of GYTR products and apparel or go to
Model: YZF-R1S
Engine Type: 998cc, liquid-cooled, 20-valve, DOHC, inline four-cylinder
Bore x Stroke: 77 x 53.6mm
Compression Ratio: 12.3:1
Fuel Delivery: fuel injection, dual-valve throttle bodies with motor-driven
secondary valves
Ignition: DC-CDI
Transmission: 6-speed w/multi-plate clutch
Final Drive: #530 O-ring chain
Suspension/Front: 43mm inverted telescopic fork w/adjustable preload, compression
and rebound damping; 4.7" travel
Suspension/Rear: Single shock w/piggyback reservoir and adjustable preload,
compression and rebound damping; 5.1" travel
Brakes/Front: Dual 320mm discs; radial-mount forged 4-piston calipers
Brakes/Rear: 220mm disc w/1-piston caliper
Tires/Front: 120/70-ZR17
Tires/Rear: 190/50-ZR17
Length: 81.3"
Width: 28.3"
Height: 43.5"
Wheelbase: 54.9"
Rake (Caster Angle): 24.0
Trail: 3.8"
Seat Height: 32.8"
Dry Weight: 379 lbs.
Fuel Capacity: 4.8 gallons
Colors: Team Yamaha Blue/White; Liquid Silver/Cerulean Silver; Shift
Attached Images
File Type: jpg 2004 yzf-r1 sideblue.jpg (160.4 KB, 426 views)
Hysyde is offline  
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post #2 of 6 (permalink) Old 09-15-2003, 12:55 AM
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Join Date: Jun 2002
Location: Marshall, MO, USA, 65340
Posts: 78
With 15% loss, it will have 153 rear wheel horsepower. That should make things interesting with the GSXR1000

1997 Yamaha YZF600R
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post #3 of 6 (permalink) Old 12-07-2003, 03:33 PM
Join Date: Dec 2003
Posts: 23
This is thing of beauty!
Attached Images
File Type: jpg r1tail.jpg (16.5 KB, 374 views)
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post #4 of 6 (permalink) Old 12-07-2003, 04:34 PM
Join Date: Sep 2003
Posts: 182
Dunno if its just me, but i would like it better without the undertail ex...
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post #5 of 6 (permalink) Old 02-04-2004, 04:16 PM
Join Date: Oct 2003
Posts: 35
It's just you. I actually really like the undertail exhaust on the new R1, looks awesome.... in my opinion.

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post #6 of 6 (permalink) Old 04-17-2004, 01:57 PM
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