01
From the Community
From the community
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02
Audio Demos
03
Compatible Sound ROMs
04
Modifications
05
Owner Registry
Production figures for the P-70S were never widely published, so there’s no official record of how many were built — or how many survive. This registry is a community census: every owner who logs their unit makes it the closest thing there is to a real count.
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06
System Components
CONTENTS
01From the Community02Audio Demos03Compatible Sound ROMs04Modifications05Owner Registry06System ComponentsManufacturer
Yamaha
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Specifications
- Class
- Standard
- Power
- 95 hp (71 kW) @8000rpm (claimed)
- Tires
- Front3.5H19 BridgestoneRear4.5H17 Bridgestone
- Brakes
- FrontDual 298 mm (11.7 in) single-piston floating caliperRearSingle 298 mm (11.7 in) single-piston floating caliper
- Engine
- Air cooled,1,101 cc (67.2 cu in)transverse four,DOHC, carb. (4) Mikuni BS34II constant velocity
- Torque
- 66.5 lb⋅ft (90.2 N⋅m) @6500rpm (claimed)
- Weight
- 603 lb (274 kg)(wet)
- Assembly
- Iwata-shi, Shizuoka-ken, Japan
- Successor
- FJ 1100
- Top speed
- 135 mph (217 km/h)
- Wheelbase
- 1,530 mm (60.1 in)
- Dimensions
- W: 812 mm (32.0 in)
- Frame type
- Duplex Cradle Frame
- Production
- 1977 (MY1978) – 1983
- Rake,trail
- 20.5°, 130 mm (5.1 in)
- Also called
- XS 1100, XS Eleven, XS 1.1
- Bore/stroke
- 71.5 mm x 68.6 mm
- Predecessor
- XS 750
- Seat height
- 820 mm (32.3 in)
- Manufacturer
- Yamaha Motor Company, Ltd.
- Oil capacity
- 3.7 L (3.9 US qt)
- Transmission
- 5-speed with drive shaft
- Fuel capacity
- US: 20 L (5.3 US gal) EU/RoW: 24 L (6.3 US gal)
- Ignition type
- Transistorized contact-less TCI with vacuum advance
- Fuel consumption
- 40.3 mpg‑US(5.8 l/100 km)
- Compression ratio
- 1978-1979: 9.2:1 1980-1983: 9.0:1