Welcome to Burton Bike Bits, Classic Motorcycle Parts BSA, Norton, Triumph, Royal Enfield

Pistons

Also see Piston Ring Clamps

Hepolite
Hepolite was the brand name for Hepworth & Grandage who merged with Wellworthy pistons Ltd (Ferry Bridge) in 1989 to form the well known A E Piston Products Ltd.

 

A E Pistons Ltd were distributors for Hepolite, Glacier and Wellworthy products which is now part of the Federal Mogul Group.

Update, the Hepolite brand name has now been purchased by Wassell Ltd and are now being produced in Taiwan. We can get these pistons but we always advise purchasing Genuine New Old Stock Hepolite wherever possible!


Also Heplex

GPM Pistons and EMGO Pistons
We also carry a range of Italian made GPM pistons.

Genuine Hepolite Pistons
Most of the pistons we stock are Genuine Hepolite or Original BSA, Triumph, Norton, Royal Enfield etc. Where we cannot supply genuine we can offer an alternative GPM equivalent.

Genuine Hepolite Pistons


Below are just a few examples of our range of pistons, please contact us with your requirements.
We also stock large quantities of piston ring sets.

BSA A65 Hepolite Piston

BSA A65 Pistons 1962-72   


 

Part # Description
68-0428 Piston Assembly 8:1 Compression, Std
Genuine NOS Hepolite Buy Online
68-0784

Piston Assembly 9:1 Compression, Std
complete with Hepolite rings

68-0786 Piston Assembly 9:1 Compression, +20
complete with Hepolite rings
68-0788 Piston Assembly 9:1 Compression, +40
complete with Hepolite rings
68-0790 Piston Assembly 9:1 Compression, +60
complete with Hepolite rings
68-0907 Piston Assembly 9:1 Compression, Std
Genuine NOS Hepolite Buy Online

BSA Pistons

Part # Description Models
40-0970 Genuine NOS 10:1 Std Size
Buy Online
BSA B25
41-0077

Genuine NOS 79mm, 7:1, 020

Buy Online

BSA B40
41-0079

Genuine NOS 79mm, 7:1, 040

Buy Online

BSA B40
47-0041 79mm, 8.75:1 BSA B40
47-0042 79mm, 8.75, 020 BSA B40
65-0405 63mm, Available in Standard/20/30/40/60
Giffex Make
BSA B20
65-0907 85mm, 8.75:1 STD-+60
Omega, High Quality!
Buy Online
BSA DBD34 Goldstar
66-1193

82mm, 4.9:1, Standard

Buy Online

BSA M20
68-0819
(15933)
75mm, 7:5 (Soiled) STD A65 '62-72

Royal Enfield Pistons

Part # Description Models
26761 (8645) 2 3/4 (70mm), Flat Top, Side Valve, STD Royal Enfield 350cc '39/40
26761 (8645) 2 3/4 (70mm), Flat Top, Side Valve, 015 Royal Enfield 350cc '39/40
25064 (8600) 64mm, Flat Top, STD Royal Enfield 250cc '39/40 Model D
25064 (8600) 64mm, Flat Top, 015 Royal Enfield 250cc '39/40 Model D
45376 70mm, 8:1 Compression, STD
Royal Enfield Meteor Minor Sport or
250/350 models as High Compression

Triumph Pistons

Part # Description Models
70-6884 69mm, 9:1, STD Genuine NOS
Buy Online
Triumph Twin '68-74
70-6884/010 69mm, 9:1, .001 o/s Genuine NOS
Buy Online
Triumph Twin '68-74
70-3358 63mm, 7:1 Compression Triumph T20
70-3358/20 63mm, 7:1 Compression, 020 Triumph T20
70-7998 Genuine NOS 10:1 Std Size
Buy Online
Triumph TR25W/T25
71-3676 76mm, 8.25:1, STD Triumph T140/TR7
19255/020 76mm, 8.5:1, 020 Triumph T140/TR7
19255/040 76mm, 8.5:1, 040 Triumph T140/TR7
19255/060 76mm, 8.5:1, 060 Triumph T140/TR7
CP105 63mm, STD/+20/+40 Triumph TRW

Pistons for Triples

BSA Rocket 3, Triumph X75/T150/T160

These piston assemblies come with rings etc, although we always recommend using Genuine Hepolite rings with pattern pistons.

 

Part # Description
70-9763 +20 Piston Assembly
(Set of 3)
Genuine Hepolite
70-9763P +20 Piston Assembly
(Set of 3)
70-9764P +40 Piston Assembly
(Set of 3)
70-9764/60P +60 Piston Assembly
(Set of 3)
71-4421 Std Piston Assembly
(Set of 3)
Genuine Hepolite
19916/20
19916/STDP

New Made Hepolite Pistons
9:1 Standard Size

Buy Online

19916/20P

New Made Hepolite Pistons
9:1 +20

Buy Online

19916/40P

New Made Hepolite Pistons
9:1 +40

Buy Online

19916/60P

New Made Hepolite Pistons
9:1 +40

Buy Online

 

17844    9:1 Compression    Std/020/040/060
For Triumph Pre Unit and Unit Models
6T/TR6/T120/T110
MADE IN ENGLAND

Also R11050 Piston Ring Sets
Std Std/010/020/040/060

Norton Pistons

Part # Description
19342P

New Hepolite Pistons, Std Size
Norton Commando 850

Buy Online

19342/020P

New Hepolite Pistons, +20
Norton Commando 850

Buy Online

19342/040P

New Hepolite Pistons, +40
Norton Commando 850

Buy Online

19342/060P

New Hepolite Pistons, +60
Norton Commando 850

Buy Online

 

Piston Hints & Tips

When fitting new pistons, always use the clearance stated in your workshop manual, or as per manufacturer's instructions.

 

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