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NC24 ~ VFR400RH ....

1987 VFR400RH ..... NC24

Run down
  • Full Japanese Import
  • 1987 built
  • Model not released in Australia
  • Bike is mint
  • Wayne Gardner "Rothmans" Grand Prix racing colours are pristine
  • Only 6000 kms
  • 400cc 90 degree V4
  • Single swing arm (ProArm)
  • Geared Cam drive
  • 6 speed constant mesh gearbox
1987 NC24 1987 NC24 1987 NC24 1987 NC24  
  1987 NC24 1987 NC24  
A COUPLE OF NC30 POMMY BROCHURES - The NC24 is very similar but umm faster ......
  1989 UK NC30 1989 UK NC30    

What the Press have Said - sometimes they are right .........

"Is the Honda VFR400 the best real-roads sports bike ever to hit tarmac? RiDE's road test editor is finding it hard to say no." RiDE mini superbikes test - October 1998

"At the classy end of the 400 market, Honda's miniature V4s are the real quality option. Both are replicas of the bigger RC30 and RC45 and have brilliant engineering, tiny dimensions and top build quality that makes them the definitive 400cc sports bike choice."
MCN Grey Import 400s review - November 1997

"The most beautifully engineered 400 available"
Which Motorcycle - April 1998


Engine 90 V4 4-stroke 16 valve DOHC (Gear Driven)
Bore & Stroke 55.0mm x 42.0mm - displacement 399cm3
Compression 11.3:1
Power 60bhp @ 12,500rpm
Torque 3.7kg-m @ 10,000rpm
Capacity 399cc
Gearbox 6-speed constant mesh
Dry Weight 165kg (375lbs)
Fuel Tank 18 litres


4 x 29mm Keihin


Twin spar aluminium frame

Wheel Base

1345 mm (53.0in.)

Seat Height

780 mm (30.7in.)

Suspension                          Front

41mm Telescopic, coil spring, oil damped, rebound damping force air adjustable (8psi - 11psi)


Pro-Arm Mono shock, fully adjustable

Brakes                                Front

Twin dics (296mm), Nissin 2 pot caliper


Single disc (220mm), Nissin 1 pot caliper

Tires                                  Front

100/90 H16


130/70 H18

Cooling liquid
Final Drive chain


Top Speed 219 Kph or 136mph
1/4 mile 12.6 @ 175 Kph or 109mph
Fuel Economy 42mpg
Range 257 Klicks or 160miles


Front 120/60R17 32psi  
Rear 150/60R17 36psi  
Performance Bridgestone are the BT90 [Now replaced by BT96]
All-Round Bridgestone are the BT92 dual-Compound

Model History

1986: VFR400RG (NC21)
1987: VFR400RH (NC24) with a single headlight and Pro-arm rear suspension
1989: VFR400RK (NC30) RC30 lookalike with new bodywork, twin headlights, exhaust was on left side.
1994: RVF replaced VFR400R with new frame, upside-down forks, 17in rear wheel. The RVF also has smaller carbs due to the Japanese 60hp restriction


Service intervals for 400cc sports bikes come at 3000 and 6000 miles.
3000 mile service includes:
Air filter check / replace, change oil and filter, check / replace spark plugs, check brake pads, chain and chassis fasteners.
6000 mile service is as 3000 mile, plus: do a Valve check and adjustment, plus carb check and adjustment.

Removing Plastic

The plastic comes off really quickly
For the seat pod:
  • Remove the rear seat pad.
  • Undo two allen screws where the pod meets the tank.
  • Undo two allen screws hidden underneath the back of the front seat pad (which also release the front pad).
  • Disconnect the rear bulbs.
  • Pull the whole lot up and backwards.
For the fairing lowers
  • undo the 3 screws on the mid panels (only the rearmost on each side is actually a screw. The others are quick release fasteners).
  • Remove the Black plastic lugs near the radiator.
  • The side panels should now swing out.
  • Undo the 4 allen screws holding the lower to the bike. It is easier to get the lower off if you undo the 3 posidrive screws that hold the plastic that funnels air to the radiator.


In standard trim an NC was restricted to around 111 mph or 180 klicks :-
The restriction is controlled by a sensor in the speedo, which can be circumvented fairly easily.
  • First remove the speedo assembly - two bolts, speedo cable and the two connector blocks.
  • Remove the cover from the speedo - Lots of black posidrive screws plus the odometer knob. This is held in place by a tiny posidrive screw in the end, which is normal ......
  • Remove the speedo unit - undo 4 silver posidrive screws at the rear of the assembly.
  • You should now be able to see the sensor. It is a cam shaped disc attached to the speedo drive, which makes contact with a metal strip (you will see its connected to one of the two wires that come in through the back of the speedo) at the magic 180 klick mark. All one needs to do is bend the strip out a tad so it doesnt make contact with the disc and snap ..... the bike is derestricted.
You will also see that the two wires entering the speedo are connected together by a resistor. This is just to tell the bikes electrics if the sensor has been disconnected, and if it is not in the circuit causes the bike to misfire above 5500 rpm.

Disclaimer: This work if tried is entirely at your risk

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