HONDA PISTON SIZE LIST
This is a fairly comprehensive list of Honda Piston Sizes and only apply to 4-stroke engines. In case you need the sizes for 2-stroke engines, please send an email to us and we will look it up for you.
All sizes are in Millimeter and the list is sorted by diameter.
This list is far from complete yet, but we're working on it.
| Brand |
Model |
Diameter (mm) |
Heartline-to-top (mm) |
Pen Diameter |
Height |
Part Number |
| Honda |
SS50 |
39.00 |
19 + 6 |
13.00 |
51.00 |
13101-036-010 |
| Honda |
SS50 |
39.25 |
19 + 6 |
13.00 |
51.00 |
13102-036-010 |
| Honda |
SS50 |
39.50 |
19 + 6 |
13.00 |
51.00 |
13103-036-010 |
| Honda |
n/a |
39.50 |
22+3 |
13.00 |
50.00 |
n/a |
| Honda |
SS50 |
39.75 |
19 + 6 |
13.00 |
51.00 |
13104-036-010 |
| Honda |
SS50 |
40.00 |
19+6 |
13.00 |
51.00 |
13105-036-010 |
| Honda |
C320S |
40.00 |
22+5 |
13.00 |
54.00 |
n/a |
| Honda |
C310 |
40.00 |
20.5+5.5 |
13.00 |
54.00 |
13101-011-010 |
| Honda |
320 |
40.00 |
22+0 |
13.00 |
49.00 |
13101-023-000 |
| Honda |
C310 |
40.25 |
20.5+5.5 |
13.00 |
54.00 |
13102-011-010 |
| Honda |
C320 |
40.25 |
22+0 |
13.00 |
49.00 |
13102-023-000 |
| Honda |
C320 |
40.50 |
22+0 |
13.00 |
49.00 |
13103-023-000 |
| Honda |
C310 |
40.50 |
20.5+5.5 |
13.00 |
54.00 |
13103-011-010 |
| Honda |
C310 |
40.75 |
20.5+5.5 |
13.00 |
54.00 |
13104-011-010 |
| Honda |
C320 |
40.75 |
22+0 |
13.00 |
49.00 |
13104-023-000 |
| Honda |
C320 |
41.00 |
22+0 |
13.00 |
49.00 |
13105-023-000 |
| Honda |
C310 |
41.00 |
20.5+5.5 |
13.00 |
54.00 |
13105-011-010 |
| Honda |
C320S |
41.00 |
22+5 |
13.00 |
54.00 |
n/a |
| Honda |
C320 |
41.50 |
22+0 |
13.00 |
49.00 |
n/a |
| Honda |
n/a |
42.00 |
20+3.5 |
13.00 |
46.00 |
13101-149-000 |
| Honda |
Novio PF50 |
42.00 |
20+0 |
13.00 |
40.00 |
13101-081-000 |
| Honda |
n/a |
42.25 |
21.5+4 |
13.00 |
48.00 |
13102-xxx-xxx |
| Honda |
Novio PF50 |
42.25 |
20+0 |
13.00 |
40.00 |
13102-081-000 |
| Honda |
Novio PF50 |
42.50 |
20+0 |
13.00 |
40.00 |
13103-081-000 |
| Honda |
Novio PF50 |
42.75 |
20+0 |
13.00 |
40.00 |
13104-081-000 |
| Honda |
Novio PF50 |
43.00 |
20+0 |
13.00 |
40.00 |
13105-081-000 |
| Honda |
Novio PF50 |
43.25 |
20+0 |
13.00 |
40.00 |
n/a |
| Honda |
Novio PF50 |
43.50 |
20+0 |
13.00 |
49.00 |
n/a |
| Honda |
CB125 |
44.00 |
23+4 |
13.00 |
54.00 |
13101-351-000 |
| Honda |
CB125K3 |
44.00 |
22.5+5 |
13.00 |
53.00 |
13101-303-000 |
| Honda |
n/a |
44.00 |
21.5+4 |
13.00 |
48.00 |
13101-399-000 |
| Honda |
CB125 |
44.00 |
21.5+5.5 |
13.00 |
55.00 |
13101-035-000 |
| Honda |
Benley 125 |
44.25 |
22+9 |
14.00 |
55.00 |
B-921630 |
| Honda |
n/a |
44.25 |
21.5+4 |
13.00 |
48.00 |
13102-399-000 |
| Honda |
CB125K3 |
44.25 |
24+3 |
13.00 |
54.00 |
13102-303-000 |
| Honda |
CB125 |
44.25 |
20+6 |
13.00 |
55.00 |
13102-035-000 |
| Honda |
n/a |
44.50 |
21.5+5 |
13.00 |
48.00 |
13103-399-000 |
| Honda |
CB125K3 |
44.50 |
24+3 |
13.00 |
53.00 |
13103-303-000 |
| Honda |
CB125 |
44.50 |
20+6 |
13.00 |
55.00 |
13103-035-000 |
| Honda |
CB125 |
44.75 |
20+6 |
13.00 |
55.00 |
13104-035-000 |
| Honda |
CB125K3 |
44.75 |
24+3 |
13.00 |
53.00 |
13104-33-000 |
| Honda |
n/a |
44.75 |
21.5+4 |
13.00 |
48.00 |
13104-399-000 |
| Honda |
n/a |
45.00 |
21.5+4 |
13.00 |
48.00 |
13105-399-000 |
| Honda |
CB125K3 |
45.00 |
24+3 |
13.00 |
53.00 |
13105-303-000 |
| Honda |
CB125 |
45.00 |
20+6 |
13.00 |
55.00 |
13105-035-000 |
| Honda |
CB350F |
47.00 |
23+4 |
13.00 |
53.00 |
13101-333-000 |
| Honda |
n/a |
47.00 |
20+10 |
13.00 |
49.00 |
n/a |
| Honda |
CB70 |
47.00 |
20+5.5 |
13.00 |
54.00 |
13101-087-000 |
| Honda |
CB70 |
47.25 |
20+5.5 |
13.00 |
54.00 |
13102-087-000 |
| Honda |
CB350F |
47.25 |
23+4 |
13.00 |
53.00 |
13102-333-000 |
| Honda |
XR80 |
47.25 |
23+3 |
13.00 |
50.00 |
13101-176-000 |
| Honda |
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