Welcome to Rockford BMX! Watch this space for exciting news!

Race the Rock!

Subscribe for weekly track news and special event notifications.

Contact

Rockford BMX

4950 Safford Rd.

Rockford, Illinois 61101

(815) 874-8719

Email

candybmx@aol.com

Social

Information

Gearing Charts

Rider Height	Frame Size	Top Tube Length	Stem Length	Bar Rise	Bar Width
4’0" & Under	Micro-Mini	15"-15.5"	Mini	2"-2.5"	20"-21.5"
4’4"-4’10"	Mini	15.5"-16.5"	Mini-Mini XL	2"-3.5"	21"-23"
4’4"-4’10"	Junior	16"-17.5"	Mini-Mini XL	3"-4.5"	22"-24.5"
4’8"-5’4"	Expert	17"-18.5"	Pro	4.5"-6"	24"-26"
5’2"-5’10"	Expert XL	18"-19"	Pro	6"-7.5"	26"-27"
5’6"-5’10"	Pro	18.5"-19.5"	Pro-Pro XL	7"-8"	27"-28"
5’10"-6’1"	Pro XXL	19"-21"	Pro-Pro XL	7"-8"	27"-28"
6′ & Over	Pro XXL	20.5" & Over	Pro XL-Pro XXL	7"-8"	28"+

Cranks
*Riders Inseam*	20"	21"	22"	23"	24"	25"	26"
Crank Length	140mm	145mm	150mm	155mm	160mm	162mm	166mm
*Riders Inseam*	27"	28"	29"	30"	31"	32"	34"
Crank Length	171mm	175mm	177mm	180mm	182mm	185mm	190mm

20" X 1.75" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	47.4	48.7	50.2	51.6	53.0	54.4	55.7	57.1	58.5	59.9	61.9	62.7	64.1
Freewheel 15	44.3	45.4	46.0	48.1	49.4	50.7	52.0	53.3	54.6	55.9	57.2	58.5	59.8
Freewheel 16	41.5	42.7	43.6	45.1	46.3	47.5	48.8	50.0	51.2	52.4	53.7	54.9	56.1
Freewheel 17	39.0	40.2	41.3	42.5	43.6	44.7	45.9	47.0	48.2	49.4	50.5	51.7	52.8
Freewheel 18	36.8	37.8	39.0	40.1	41.2	42.3	43.3	44.4	45.5	46.6	47.7	48.8	49.9

20" X 1.50" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	46.8	48.1	49.5	50.9	52.3	53.6	55.0	56.4	57.5	59.1	60.5	61.8	63.2
Freewheel 15	43.6	44.9	46.2	47.4	48.8	50.1	51.3	52.8	53.9	55.2	56.5	57.7	59.1
Freewheel 16	40.9	42.1	43.3	44.5	45.7	46.9	48.1	49.3	50.5	51.7	52.9	54.1	55.3
Freewheel 17	38.5	39.6	40.8	41.9	43.1	44.1	45.2	46.4	47.5	48.7	49.8	51.0	52.2
Freewheel 18	36.4	37.4	38.5	39.6	40.6	41.7	42.8	43.9	44.9	46.0	47.0	48.1	49.2

20" x 1 3/8" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	51.0	52.5	54.0	55.5	57.0	58.5	60.0	61.5	63.0	64.5	66.0	67.5	69.0
Freewheel 15	47.6	49.0	50.4	51.6	53.2	54.6	56.0	57.4	58.8	60.2	61.6	63.0	64.4
Freewheel 16	44.6	45.9	47.3	48.6	49.9	51.2	52.5	53.9	55.2	56.5	57.8	59.1	60.4
Freewheel 17	42.0	43.2	44.5	45.7	47.0	48.2	49.4	50.7	51.9	53.2	54.4	55.6	56.9
Freewheel 18	39.7	40.7	42.0	43.2	44.4	45.5	46.7	47.9	49.0	50.2	51.4	52.5	53.7

20" X 1 1/8" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	48.6	50.0	51.4	52.8	54.3	55.7	57.1	58.6	60.0	61.4	62.8	64.3	65.7
Freewheel 15	45.3	46.7	48.0	49.3	50.7	52.0	53.3	54.7	56.0	57.3	58.7	60.0	61.3
Freewheel 16	42.5	43.8	45.0	46.2	47.5	48.7	50.0	51.2	52.5	53.7	55.0	56.2	57.5
Freewheel 17	40.0	41.2	42.3	43.5	44.7	45.9	47.0	48.2	49.4	50.6	51.8	52.9	54.1
Freewheel 18	37.7	38.8	40.0	41.1	42.2	43.3	44.4	45.6	46.7	47.8	48.9	50.0	51.1

24" X 1.75" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	58.3	60.0	61.7	63.3	65.0	66.9	68.6	70.3	72.0	73.7	75.3	77.0	78.9
Freewheel 15	54.4	56.0	57.6	59.3	60.7	62.4	64.1	65.5	67.2	68.9	70.3	72.0	73.7
Freewheel 16	51.0	52.5	54.0	55.5	57.0	58.5	60.0	61.4	63.1	64.5	66.0	67.4	69.1
Freewheel 17	48.0	49.4	50.0	52.2	53.6	55.1	56.5	57.9	59.3	60.7	62.1	63.6	65.0
Freewheel 18	45.3	46.5	48.0	49.4	50.7	52.0	53.3	54.7	56.0	57.3	58.5	60.0	61.4

24" X 1.50" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	55.9	57.5	59.1	60.7	62.3	64.2	65.8	67.4	69.0	70.6	72.2	73.8	75.7
Freewheel 15	52.1	53.7	55.2	56.7	58.2	59.8	61.3	62.8	64.4	65.9	67.4	69.0	70.6
Freewheel 16	48.4	50.3	51.8	53.2	54.6	56.0	57.5	58.9	60.3	61.8	63.2	64.6	66.2
Freewheel 17	46.0	47.3	48.7	50.0	51.4	52.8	54.1	55.5	56.8	58.8	59.5	60.8	62.3
Freewheel 18	43.4	44.7	46.0	47.2	48.5	49.8	51.1	52.4	53.7	54.9	56.2	57.5	58.9

24" X 1 3/8" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	58.3	60.0	61.7	63.3	65.0	66.9	68.6	70.3	72.0	73.7	75.3	77.0	78.9
Freewheel 15	54.4	56.0	57.6	59.3	60.7	62.4	64.1	65.5	67.2	68.9	71.3	72.0	73.7
Freewheel 16	51.1	52.5	54.0	55.5	57.0	58.5	60.0	61.4	63.1	64.5	66.0	67.4	69.1
Freewheel 17	48.0	49.4	50.8	52.2	53.6	55.1	56.5	57.9	59.3	60.7	62.1	63.3	65.0
Freewheel 18	45.3	46.5	48.0	49.4	50.7	52.0	53.3	54.7	56.0	57.3	58.5	60.0	61.4

24" X 1 1/8" GEAR CHART
*Chain wheels*	34	35	36	37	38	39	40	41	42	43	44	45	46
Freewheel 14	54.9	56.5	58.1	59.7	61.3	63.1	64.7	66.3	67.9	69.4	71.0	72.6	74.4
Freewheel 15	51.3	52.8	54.3	55.8	57.3	58.8	60.3	61.8	63.3	64.9	66.3	67.9	69.4
Freewheel 16	48.1	49.5	50.9	52.3	53.7	55.1	56.6	57.9	59.5	60.8	62.2	63.9	65.1
Freewheel 17	45.2	46.6	47.9	49.3	50.6	51.9	53.2	54.6	55.9	57.2	58.6	59.9	61.3
Freewheel 18	42.7	43.9	45.2	46.6	47.7	49.1	50.3	51.5	52.8	54.0	55.3	56.6	57.9