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130 mm BCD Road Chainrings from Harris Cyclery

Sizes: 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 |

We stock a wide range of chainrings for modern and older crank sets.
For more technical detail see the B.C.D. entry in Sheldon Brown's Bicycle Glossary

130 mm bolt circle (Standard "Road" Size, double and the two largest rings of a triple.)

Any ring on this page will fit any 130 BCD crank, including Shimano Ultegra, 105, Tiagra double and triple, also Dura-Ace double.
The middle ring on a Dura-Ace triple is a special "Triplizer" type ring, using a non-standard 92 BCD, for which only one "granny ring", a 30, is made (not available from Harris).

Sugino	TA	Origin8 110/130

Size Description Part Number Price (Click Cart Button)
38 Rocket Ring CRK380
Sugino CRG338
T.A. CRT38 With shift-assist pins for middle position.
39 Rocket Ring CRK390
Sugino CRG339
T.A. CRT39 With shift-assist pins for middle position.
40 Rocket Ring CRK400
Sugino CRG340
T.A. CRT40 With shift-assist pins for middle position.
41
Rocket Ring CRK410
42
Rocket Ring CRK420
Sugino CRG342
T.A. CRT42 With shift-assist pins for middle position.
43
Rocket Ring CRK430
44
Rocket Ring CRK440
Sugino CRG344
T.A. CRT44 With shift-assist pins for middle position.
45 Rocket Ring CRK450
46
Rocket Ring CRK460
Sugino CRG346
T.A. CRT46 With shift-assist pins for outer position.
47 Rocket Ring CRK470
48 Rocket Ring CRK480
Sugino CRG348
T.A. CRT48 With shift-assist pins for outer position.
49 T.A. CRT49 With shift-assist pins for outer position.
50
Sugino CRG350
T.A. CRT50 With shift-assist pins for outer position.
52
Sugino CRG352
T.A. CRT52 With shift-assist pins for outer position.
53
T.A. CRT53 With shift-assist pins for outer position.
54 T.A. CRT54 With shift-assist pins for outer position.

Size	Description	Part Number	Price (Click Cart Button)
38	Rocket Ring	CRK380
Sugino	CRG338
T.A.	CRT38		With shift-assist pins for middle position.
39	Rocket Ring	CRK390
Sugino	CRG339
T.A.	CRT39		With shift-assist pins for middle position.
40	Rocket Ring	CRK400
Sugino	CRG340
T.A.	CRT40		With shift-assist pins for middle position.
41
Rocket Ring	CRK410
42
Rocket Ring	CRK420
Sugino	CRG342
T.A.	CRT42		With shift-assist pins for middle position.
43
Rocket Ring	CRK430
44
Rocket Ring	CRK440
Sugino	CRG344
T.A.	CRT44		With shift-assist pins for middle position.
45	Rocket Ring	CRK450
46
Rocket Ring	CRK460
Sugino	CRG346
T.A.	CRT46		With shift-assist pins for outer position.
47	Rocket Ring	CRK470
48	Rocket Ring	CRK480
Sugino	CRG348
T.A.	CRT48		With shift-assist pins for outer position.
49	T.A.	CRT49		With shift-assist pins for outer position.
50
Sugino	CRG350
T.A.	CRT50		With shift-assist pins for outer position.
52
Sugino	CRG352
T.A.	CRT52		With shift-assist pins for outer position.
53
T.A.	CRT53		With shift-assist pins for outer position.
54	T.A.	CRT54		With shift-assist pins for outer position.

Origin8 (Formerly Rocket Ring) BMX Chainrings
(fit 110 or 130 cranks)

These U.S. made 6061 T6 chainwheels are a great value, and ideal for use for fixed-gear road conversions.
They are thicker and stiffer than most road rings, but they work with either wide or narrow chain.
Double set of mounting holes means they fit either 110 mm or 130 mm bolt circle cranks!
They have tall teeth to prevent accidental derailment, and are a great choice for singlespeed or fixed-gear bikes, though they will generally also work with derailers.
These are very similar to the no-longer available Tuf-Neck chainrings.
Available sizes: 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48

T.A. Chainrings from France

T.A. chainrings are super-high quality, premium rings in Zircal 7075 aluminum. They have machined teeth, and a mirror-like finish.
Note: We no longer sell the TA Triplizers.
Classic T.A. Cyclotouriste cranks, chainrings and bottomm brackets are listed on our French Cranks Page.

"9-Speed" Chainrings

There is a lot of confusion about the compatibility of narrow 9-speed chains with older cranksets. Shimano says you should replace the inner chainring(s) with specially designated 9-speed ones, but then they're all too eager to sell you stuff, whether you need it or not.
Shimano is also concerned about clueless users. The worst-case scenario is that you will be riding along with the bike in its highest gear (large front, small rear) and then for some bizarre reason shift down in front before downshifting in the back. (There is no shift pattern in which it is reasonable to shift in this sequence.) If you do shift this way, there's a small chance that the chain might "skate" over the edges of the teeth for maybe half a turn.
In practice this "problem" almost never materializes. Many, many cyclists are using 9-speed chains with older cranksets and having no problems whatever.

Click Here for Other Chainring Bolt Patterns

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and others.

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URL: http://harriscyclery.com/130