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 Pistons 1962-72

BSA A65 Pistons with AE Hepolite Rings
Part #Description
68-0428Piston Assembly 8:1 Compression, Std
Genuine NOS Hepolite Buy Online
68-0784Piston Assembly 9:1 Compression, Std
complete with Hepolite rings
68-0786Piston Assembly 9:1 Compression, +20
complete with Hepolite rings Buy Online
68-0788Piston Assembly 9:1 Compression, +40
complete with Hepolite rings Buy Online
68-0790Piston Assembly 9:1 Compression, +60
complete with Hepolite rings Buy Online
68-0907Piston Assembly 9:1 Compression, Std
Genuine NOS Hepolite Buy Online

BSA Pistons

Part #DescriptionModels
40-0970Genuine NOS 10:1 Std Size
Buy Online
BSA B25
41-0077Genuine NOS 79mm, 7:1, 020

Buy Online

BSA B40
41-0079Genuine NOS 79mm, 7:1, 040

Buy Online

BSA B40
47-004179mm, 8.75:1BSA B40
47-004279mm, 8.75, 020BSA B40
65-040563mm, Available in Standard/20/30/40/60
Giffex Make
BSA B20
65-090785mm, 8.75:1 STD-+60
Omega, High Quality!
Buy Online
BSA DBD34 Goldstar
66-119382mm, 4.9:1, Standard

Buy Online

BSA M20
68-0819
(15933)
75mm, 7:5 (Soiled) STDA65 ’62-72

Royal Enfield Pistons

Part #DescriptionModels
26761 (8645)2 3/4 (70mm), Flat Top, Side Valve, STDRoyal Enfield 350cc ’39/40
26761 (8645)2 3/4 (70mm), Flat Top, Side Valve, 015Royal Enfield 350cc ’39/40
25064 (8600)64mm, Flat Top, STDRoyal Enfield 250cc ’39/40 Model D
25064 (8600)64mm, Flat Top, 015Royal Enfield 250cc ’39/40 Model D
4537670mm, 8:1 Compression, STD
Royal Enfield Meteor Minor Sport or
250/350 models as High Compression

Triumph Pistons

Part #DescriptionModels
70-688469mm, 9:1, STD Genuine NOS
Buy Online
Triumph Twin ’68-74
70-6884/01069mm, 9:1, .001 o/s Genuine NOS
Buy Online
Triumph Twin ’68-74
70-335863mm, 7:1 CompressionTriumph T20
70-3358/2063mm, 7:1 Compression, 020Triumph T20
70-7998Genuine NOS 10:1 Std Size
Buy Online
Triumph TR25W/T25
71-367676mm, 8.25:1, STDTriumph T140/TR7
19255/02076mm, 8.5:1, 020Triumph T140/TR7
19255/04076mm, 8.5:1, 040Triumph T140/TR7
19255/06076mm, 8.5:1, 060Triumph T140/TR7
CP10563mm, STD/+20/+40Triumph 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)
71-4421Std Piston Assembly
(Set of 3)
Genuine Hepolite
19916/20
19916/STDPNew Made Hepolite Pistons
9:1 Standard SizeBuy Online
19916/20PNew Made Hepolite Pistons
9:1 +20Buy Online
19916/40PNew Made Hepolite Pistons
9:1 +40Buy Online
19916/60PNew Made Hepolite Pistons
9:1 +40Buy 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
19342PNew Hepolite Pistons, Std Size
Norton Commando 850Buy Online
19342/020PNew Hepolite Pistons, +20
Norton Commando 850Buy Online
19342/040PNew Hepolite Pistons, +40
Norton Commando 850Buy Online
19342/060PNew Hepolite Pistons, +60
Norton Commando 850Buy Online

 

Piston Hints & Tips

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