Triumph 650cc H-Beam 4340 Steel Connecting Rods (Pair)

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Triumph 650cc H-Beam 4340 Steel Connecting Rods (Pair)

Availability: In stock

These are the very best rods you can buy for your Triumph 650. More information below:

$450.00

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Description

Details

MAP Cycle is proud to offer our 4340 H beam connecting rods. The exotic 4340 forged steel makes for a lifetime connecting rod.

Fits:

Triumph T120 Bonneville 650cc 1959-1972
Triumph TR6 Tiger 650cc 1963-1972
Triumph pre-unit models 1956-1962 (for earlier models - see "Note" below)

Dimensions:

6.50" center to center
.688" pin size

Features:

Rods are balanced to +/- 1 gram
Unmatched quality - the best rods available anywhere for Triumph
"Solid Works" designed and stress tested
Machined from 4340 forging
Shot peened for stress relief
ARP2000 bolts (220,000 lb. tensile strength)
Innovative machined piston oil squirting notches
Double wrist pin oilers
Unique reinforced small end critical areas without adding excess weight or cost

Finite element analyses design by High Cotton MotoWorks allows for:

Re-shaped pin boss for added strength (helps prevent "pin flex"& small-end failure)
Double “forced” pin oilers to reduce friction and piston pin heat
Bushed small end (replaceable) eliminating the need for fragile and expensive DLC pins
Optimized big-end and pin boss for strength with important weight reduction compared to other steel rods

Note:

Use with O.E.M rod bearings, part number B2026M
Designed to fit all standard 650 T120/TR6 engines from 1959-1972
For 500/650 pre-unit engines prior to 1956 models, it is best to measure the big-end journal diameter and rod length prior to ordering as many early small journal cranks have now been replaced with stronger ones from later model engines. Verify that your crank has a journal diameter of 1.6235"-1.6240" (standard) and a rod C-C of 6.5" prior to ordering.

Customer Comments:

"Your con rods arrived yesterday. They are a thing of beauty!! All perfect! I am extremely impressed with the quality machining and workmanship. Bryce, Queensland, Australia.
Beautiful! I never thought I could feel this way over connecting rods! guitarguy, Bloomfield Hills MI...eBay purchase
Brilliant workmanship! eBay purchase, Kal..
I race with these rods. They will hold together at 8000 plus! K. Roberts, Ohio
If you buy and carefully fit MAP's spares you are well on the way to a bullet proof engine Robert, Nottinghamshire, UK

Additional Information

Material	4340-Forged
Style	H-Beam
Big End Weight	315 grams
Small End Weight	115.1 grams
Manufacture	MAP Cycle
Center To Center	6.50"
Pin Size	.688"
Big End Shell	B2026M
SKU	MAP7061

Additional Information

Additional Information

Material	4340-Forged
Style	H-Beam
Big End Weight	315 grams
Small End Weight	115.1 grams
Manufacture	MAP Cycle
Center To Center	6.50"
Pin Size	.688"
Big End Shell	B2026M
SKU	MAP7061

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Fitment Information

Triumph Models

Triumph Bonneville 650 4 Speed T120R 1972
Triumph Bonneville 650 5 Speed T120RV 1972
Triumph Bonneville 650 Police 1966
Triumph Bonneville 650 T120 1959 - 1970
Triumph Bonneville 650 T120R 1961 - 1971
Triumph Bonneville 650 TT Special T120 1964 - 1967
Triumph Bonneville 650 Thruxton T120 1965
Triumph Thunderbird 650 6T 1956 - 1966
Triumph Tiger 650 T110 1956 - 1961
Triumph Trophy 650 4 Speed TR6C 1972
Triumph Trophy 650 5 Speed TR6CV 1972
Triumph Trophy 650 5 Speed TR6RV 1972
Triumph Trophy 650 TR6 1956 - 1970
Triumph Trophy 650 TR6C 1966 - 1971
Triumph Trophy 650 TR6R 1966 - 1972
Triumph Trophy 650 TR6SC 1964 - 1966
Triumph Trophy 650 TR6SR 1964 - 1966

Product Question

Product Questions

How do your forged steel 650 triumph connecting rods compare weight wise to Corillo connecting rods?

Question by: Graham on Jan 13, 2017 6:25:00 PM

Thanks for your question. Our H-Beam connecting rods are about 25 grams lighter. We also believe they are the best T-120 connecting rods available. As a bonus, our rods are also less expensive.

Answer by: rick c (Admin) on Jan 16, 2017 2:56:00 PM

-37

Are these the same weight as my 650 tr6r rods? What is the big end and small end weights.

Question by: Gavin Callingham on Nov 14, 2017 3:53:00 AM

These rods are somewhat heavier than stock alloy rods, however, in the all important consideration of reciprocating weight, they're only fractionally heavier - and when you consider that alloy rods are subject to self destruction (depending on heat cycles), the minimal weight difference far outweighs the risk to your engine. We have racers all over the world choosing these rods for that very reason. These rods also use advanced oiling technology and offer many other features which make them significantly better than any other rod available for vintage Triumphs, BSA and Nortons.
The big end weight is 315 grams and the small end is 115.1 grams.

Answer by: rick c (Admin) on Nov 14, 2017 10:46:00 AM

What are the big end regrind sizes please?

Question by: Bernard mitchell on Nov 3, 2019 10:55:00 AM

We sell bearing shells for these connecting rods in standard size as well as +.010, +.020, +.030 and +.040 inch.

Answer by: rick c (Admin) on Nov 4, 2019 10:10:00 AM

Hi, new customer first order. Your forged conrods for 650 Triumph look great and the buzz has nothing but praise, that said, I have a question. They appear to be sold with the bolts, yet I can find no information in your description for said hardware. I was expecting / hoping for ARP bolts. Can you fill in the blanks please? Jeff P.

-3

Question by: Jeffrey Pedersen on Feb 26, 2024 7:51:00 AM

yes- they come with ARP bolts

Answer by: lynda perna (Admin) on Feb 27, 2024 9:19:00 AM

Do your T120 rods use standard Triumph rod bearing shells ? Is case grinding required to clearance the big end and its cap bolts ?
What are the rod big and small end weights for balancing purposes ?

-6

Question by: Hans Mager on Mar 29, 2017 4:36:00 PM

As long as the bike is stock, these rods will fit and no grinding is required. These rods use standard shells (B2026m). The small end weight is 115 grams and the big end is 314.5 grams.

Answer by: rick c (Admin) on Mar 29, 2017 5:44:00 PM

Do you ship to England, United Kingdom?

-8

Question by: Phil Dale on Jan 14, 2017 1:48:00 PM

Yes, we're happy to ship to the UK!

Answer by: rick c (Admin) on Jan 16, 2017 1:45:00 PM

-64

I am rebuilding my 1966 T120R and need connecting rods. Do these rods weigh the same as my originals? If not, how does that effect my balance factor? Thank you, David Reid

-19

Question by: David Reid on Jul 9, 2016 6:22:00 PM

The factory never really balanced them properly from the get go. Our recommendation is to have it balanced while its all apart. It should be better than new when done correctly.

Answer by: Web Support (Admin) on Jul 12, 2016 6:15:00 PM

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Dimensions:

6.50" center to center

.688" pin size

Features:

Rods are balanced to +/- 1 gram

Unmatched quality - the best rods available anywhere for Triumph

"Solid Works" designed and stress tested

Machined from 4340 forging

Shot peened for stress relief

ARP2000 bolts (220,000 lb. tensile strength)

Innovative machined piston oil squirting notches

Double wrist pin oilers

Unique reinforced small end critical areas without adding excess weight or cost

Finite element analyses design by High Cotton MotoWorks allows for:

Re-shaped pin boss for added strength (helps prevent "pin flex"& small-end failure)

Double “forced” pin oilers to reduce friction and piston pin heat

Bushed small end (replaceable) eliminating the need for fragile and expensive DLC pins

Optimized big-end and pin boss for strength with important weight reduction compared to other steel rods

Note:

Use with O.E.M rod bearings, part number B2026M

Designed to fit all standard 650 T120/TR6 engines from 1959-1972

For 500/650 pre-unit engines prior to 1956 models, it is best to measure the big-end journal diameter and rod length prior to ordering as many early small journal cranks have now been replaced with stronger ones from later model engines. Verify that your crank has a journal diameter of 1.6235"-1.6240" (standard) and a rod C-C of 6.5" prior to ordering.

Customer Comments:

"Your con rods arrived yesterday. They are a thing of beauty!! All perfect! I am extremely impressed with the quality machining and workmanship. Bryce, Queensland, Australia.

Beautiful! I never thought I could feel this way over connecting rods! guitarguy, Bloomfield Hills MI...eBay purchase

Brilliant workmanship! eBay purchase, Kal..

I race with these rods. They will hold together at 8000 plus! K. Roberts, Ohio

If you buy and carefully fit MAP's spares you are well on the way to a bullet proof engine Robert, Nottinghamshire, UK

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