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4.5 out of 5 4.5 (2 reviews)

Haynes Manual Triumph 2-valve Unit Twins (Manual # 122)

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$34.95 $37.95

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Every Haynes manual is based on a complete teardown and then a step-by-step rebuild. Everything is covered – from a complete engine rebuild to changing an oil filter.

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Haynes Manual Triumph 2-valve Unit Twins (Manual # 122)

(based on 2 reviews)

Reviewed by 2 customers

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covers some but not all details

By Scott

from waterford, ct

Verified Buyer


  • Good beginning source


  • Leaves some details out

Best Uses

  • Good groundwork source

Comments about Haynes Manual Triumph 2-valve Unit Twins (Manual # 122):

This will get you going well into the project but when it comes to the specific tricks for completing some task you may need to seek other info.

  • Motorsports:
  • Motorcycle Enthusiast

(1 of 3 customers found this review helpful)


It got real pretty pages

By Ole Geezer

from Biloxi Ms.

Verified Buyer


  • Durable
  • Easy To Use
  • Lightweight
  • Them pictures be BIG


  • I need it readed to me
  • Wears Easily

Best Uses

  • Most useful camping
  • Off-Road
  • Racing
  • Replacement Part
  • Street Riding
  • Upgrade

Comments about Haynes Manual Triumph 2-valve Unit Twins (Manual # 122):

I like looking at the pix's

The pages are realy absorbent without clinging.

More than one page in needed.

  • Motorsports:
  • All out fun, Mechanic, Motorcycle Enthusiast

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1 Question | 1 Answer
Displaying question 1
  • Q:

    I have purchased a manual for a 1971 & 1972 Triumph T120R and all the engine #s begin with a DD - - - - . My engine # starts with a EE. The full # is EE22652. I bought this bike in London on June 7th 1971 while touring Europe. Now after 20+ years I want to restore it and cannot find a manual to help me finish it. I really need a manual for this bike. Formost I need a manual with the Electrical System for this bike. None of the Electrical Systems in my manual have the same color codes for the harness wires. Can you help me?
    Asked on 1/15/2011 by Mr. from Sandy, Utah

    1 answer

    • Staff Reviewer


      Thanks for your question!

      To further assist you please provide us with the year/make/model of the machine, Also the last 6 digits of the vin number off the machine as well.

      Answered on 2/4/2011 by Anonymous
Displaying question 1

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Specifications and Options

Brand Haynes
Manufacturer Triumph
Manual Number 122