I have extensive catalogues going from 1952-1975 covering every motorcycle & some cars that were fitted with Renold chain by their manufacturers. There are too many options available to list without transcribing 1000s of records.

Digitally enhanced copies of the official trade catalogues are available for purchase. £5 each for the 1952-1962 and 1963-1975 versions or £9 for the pair. I found the originals of these in the bin as an apprentice and haven't seen them anywhere else. These were only available to dealers so it's likely not many survived. After spending weeks cleaning up high resolution scans, I've printed them on quality paper with front & back on card. The pages were then stapled & bound in a rigid spine with a clear plastic cover for that extra oily fingerprint protection. Perfect addition to a classic biker workshop !

If you don't want to splash out the cash, email me with your bike make, model, year at classic@chains.guru & I'll look up your correct chain details no charge.

 

All motorcycle chains share a common ancestry from the original Renold chain. They came up with the first numbering system and although other codes have been created along the way, the Renold codes are still the most common. Below is a simple cross reference chart of the chains most likely fitted to your classic motorcycle.

Pitch
(Pin to Pin)
Width
Between Plates
Roller Diameter Size Code
Inch Metric Inch Metric Inch Metric Renold ISO Other
1.Simple 8mm 0.315 8.00   0.118 3.00 0.197 5.00 110 500 05B-1  
1.Simple 3/8" 0.375 9.525   0.155 3.94 0.250 6.35 110 037    
1.Simple 3/8" 0.375 9.525   0.225 5.72 0.250 6.35 110 038 (GY06B1) 06B-1  
1.Simple 1/2" 0.50 12.7   0.130 3.30 0.305 7.75 111 044    
1.Simple (Coventry) 1/2" 0.50 12.7   0.130 3.30 0.305 7.75 111 048    
1.Simple 1/2" 0.50 12.7 3/16 0.192 4.88 0.305 7.75 111 046   415
1.Simple (Coventry) 1/2" 0.50 12.7 3/16 0.192 4.88 0.305 7.75 111 049   415
1.Simple (Coventry) 1/2" 0.50 12.7 3/16 0.192 4.88 0.305 7.75 112 045   415
1.Simple 1/2" 0.50 12.7   0.205 5.21 0.335 8.51 110 044 (GY08B1NA)    
1.Simple (Coventry) 1/2" 0.50 12.7 1/4" 0.250 6.35 0.305 7.75 112 046   420
1.Simple 1/2" 0.50 12.7   0.305 7.75 0.305 7.75 110 046    
1.Simple 1/2" 0.50 12.7   0.305 7.75 0.335 8.51 GY08B1 08B-1  
1.Simple 1/2" 0.50 12.7 5/16" 0.3125 7.94 0.312 7.92     425
1.Simple (GP) 5/8" 0.625 15.875 1/4" 0.255 6.48 0.400 10.16 119 058 (GY10B1NA)    
1.Simple (Mark 10) 5/8" 0.625 15.875 1/4" 0.255 6.48 0.400 10.16 110 054   520
1.Simple 5/8" 0.625 15.875 5/16" 0.3125 7.94 0.400 10.16     525
1.Simple (GP) 5/8" 0.625 15.875 3/8" 0.380 9.65 0.400 10.16 119 059  (GY10B1) 10B-1 530
1.Simple (Mark 10) 5/8" 0.625 15.875 3/8" 0.380 9.65 0.400 10.16 110 056 10B-1 530
1.Simple 3/4" 0.75 19.05 3/8" 0.375 9.53 0.469 11.91     630
1.Simple 3/4" 0.75 19.05   0.46 11.68 0.475 12.07 110 066 (GY12B1) 12B-1  
1.Simple 1" 1.00 25.4   0.67 17.02 0.625 15.88 GY16B1 16B-1  
1.Simple 1 ¼" 1.25 31.75   0.77 19.56 0.750 19.05 GY20B1 20B-1  
1.Simple 1 ½" 1.50 38.1 1" 1.00 25.40 1.000 25.40 GY24B1 24B-1  
2.Duplex   0.315 8.00   0.118 3.00 0.197 5.00 114 500    
2.Duplex 3/8" 0.375 9.525   0.225 5.72 0.250 6.35 114 038 (GY06B2) 06B-2  
2.Duplex 1/2" 0.50 12.7   0.305 7.75 0.335 8.51 114 046 (GY08B2) 08B-2  
2.Duplex 5/8" 0.625 15.875 3/8" 0.380 9.65 0.400 10.16 GY10B2 10B-2  
2.Duplex 3/4" 0.75 19.05   0.46 11.68 0.475 12.07 GY12B2 12B-2  
2.Duplex 1" 1.00 25.4   0.67 17.02 0.625 15.88 GY16B2 16B-2  
2.Duplex 1 ¼" 1.25 31.75   0.77 19.56 0.750 19.05 GY20B2 20B-2  
2.Duplex 1 ½" 1.50 38.1 1" 1.00 25.40 1.000 25.40      
3.Triplex 3/8 0.375 9.525   0.225 5.72 0.250 6.35 116 038