Is this a Jap-Spec s2000 ?

[LEWD]

There is no change in rotor size, changed by discs the other day, RDA and DBA have it wrong. The only change to the braking system in the 04+ cars is the brake pad itself runs a different compound.

Aus is right, VIN is AP1, not AP2

Where a lot of you are wrong though is that you assume the changes are only cosmetic, which they are not. Ive listed the changes below. The '06 onwards had further changes given the move to DBW, which I personally think was a backward step, but anyway.

TRANSMISSION
• Carbon fiber synchromesh replace the solid brass ones for all gears except reverse. The new design features a brass ring with a carbon fiber element bonded on the inner surface, resulting in simplified mechanical components, increased synchronizer capacity, improved abrasion resistance, and reduced weight. The weight reduction and increased capacity translates to a smoother and quicker shifting feel. Further enhancing shift feel quality is a reduction in the load acting on the disc spring. Per Honda, this tweak results in reduced shift knob operational load and reduced harshness.
• transmission case rigidity improved


CLUTCH
• Redesigned clutch and clutch case.
• To reduce the "impact torque" of a high rpm clutch dump, the new clutch has an additional orifice at the sleeve cylinder, which reduces the torque reaction acting on the drivetrain, in effect a clutch delay system.
• The clutch case has incorporated additional rib reinforcements to reduce vibrations and noises generated by the drivetrain. The additional ribs have improved clutch case rigidity by approximately 10%.

DIFFERENTIAL
• Redesigned differential; it has been beefed up.
• By moving to an FCD material (from FC), the case rigidity was improved by 40% while the overall case strength was increased 20%.
• Gear fatigue resistance improved by 5% through a change in the shot peening method for the drive pinion gear.

SUSPENSION & STEERING
• Front spring rates increased by nearly 7%
• Rear spring rates were softened by roughly 10%.
• Shock damper rates have been adjusted accordingly.
• Front stabilizer bar is unchanged.
• Rear stabilizer bar was reduced in diameter by 1.8mm to 25.4 mm to improve bump steer & cornering.
• To enhance steering feel and accuracy, the suspension geometry was altered slightly, lowering the steering knuckles by 1.5mm.
• The EPS (Electrical Power Steering) system features an optimized steer response gain, while the software was updated to improve steering linearity and agility. The steering gear ratio was also changed to match the new suspension and tire characteristics. Increased rigidity of the steering gearbox supporting mounts results in improved steering precision as well.
• One of the "features" of the outgoing S2000's rear suspension was its tendency to exhibit bump steer at the limits. Honda's engineers have attacked this issue from several angles. Rear toe in was reduced from -0deg 19' to -0deg 10'. At a 50mm bump deflection, toe-in has been reduced from -0.19 degrees to -0.05 degrees. Secondly, the rear roll center was lowered from 101mm to 92mm. Honda claims improved roadholding under full suspension compression or during severe body roll situations.
• Honda claims improvements in overall stability, steering accuracy/effort/feel, bump steer characteristics, wet performance/hydroplaning, high-speed stability, smooth ride comfort, choppy ride comfort, and at the limit controllability.
• steering wheel lock-to-lock increased from 2.4 to 2.6 wheel turns.
• steering ratio lowered from 13.8:1 to 14.9:1

CHASSIS
• A new cross brace at the very front of the frame (positioned horizontally, in front of the radiator),
• Reinforcements at key crossmember joints
• Additional fixing points to existing braces
• Reinforcements to the rear wheel arch bulkhead
• Front suspension upper arm brackets were strengthened, further benefiting handling.

WHEELS & TIRES
• New 17" wheels, wider in front and rear (by 0.5" and 1.0" respectively), wrapped in wider tires.
• In the front, 205/55R16s were replaced by 215/45R17 tires.
• In the rear, 245/40R17s bumped the incumbent 225/50R16s.
• Honda says both changes are key contributors to extended cornering limits.
• The tires are now Bridgestone Potenza RE050s, replacing the former model's Bridgestone Potenza S-02s.
• The new tires feature a completely different tread pattern, intended to improve the balance in performance between dry and wet conditions.

BRAKES
• To improve fade resistance and stopping power at and near the limit, the brake pad material has been changed from a non-metallic compound to a new metallic compound. The new pad material (Jurid632) provides greater frictional stability in high-temperature operating ranges.
• Master cylinder ratio has been changed from 6.5 to 6.0, resulting in an increased feel of rigidity and "build-up" quality (Honda's term for more stopping power in the latter stage of brake application under constant application). Honda claims less pedal travel is required than previously.
• The ABS system has been improved through the use of split-regulation yaw-control logic for improved stability on split-μμ surfaces when the ABS is triggered. Furthermore, though more powerful than before, the system (consisting of the CPU and modulator) has been downsized for both precious space and weight savings.