In 1981 Shimano changed their nomenclature to better represent the components' name. They have done so before but the change from 1981 stuck and is still used as of today. As such, I am going to try to squish identical groups with different names under the same category.

Dura-Ace Track (1972^[1]-1978^[2])

GA-100

BCD:

Avail. Crank Lengths: 165mm, (167.5mm), 170mm, (172,5mm) or 175mm

Pedal Thread: 9/16"x20

Chain size: 1/2" x 1/8"

Torque figure:

GB-100

Spindle type: Square

Spindle Length: 112mm

Chain Line: 1/2" x 1/8"

Available Threadings: BSC, FR or ITA

Torque figure:

Tool:

HA-300 (previously called H-741 or H-841 for front and rear wheel hubs respectively)

No. of Spoke Holes: 36, 32 or 28

Front Overlock nut dimensions: 100mm

Rear Overlock nut dimensions: 110mm or 120mm

FA-200 (previously called FR-912>FR-916)

Chain size: 1/2" x 1/8"

Thread: 1,37"x24TPI

Available Teeth: 13, 14, 15 or 16 teeth

UA-200 (Previously called K-902)

HS-741 or HS-841

Small Flange Wheel Hubs made unavailable from 1975 onwards.

Dura-Ace 7000 (or 10) (1977-1981)

This was Shimano's attempt at revolutionising track racing. "The 10mm pitch system reduces the overall weight and size of the components"

FC-7000 (previously called GA-110)

BCD:

Avail. Crank Lengths: 165mm or 170mm

Pedal Thread: 9/16"x20

Chain size: 10mmx3mm

Torque figure:

HB-7020 (previously called HA-310)

No. of Spoke Holes: 36, 32 or 28

Front Overlock nut dimensions: 100mm

Rear Overlock nut dimensions: 110mm or 120mm

CN-7000 (previously called QA-100)

Chain size: 10mmx3mm

SS-7000 (previously called FA-210)

Chain size: 10mmx3mm

Thread: BC33x24TPI

Available Teeth: 14, 15 or 16 teeth

Dura-Ace 7500 (1981-1984)

FC-7500

BCD: 144

Avail. Crank Lengths: 165mm, 167.5mm or 170mm

Pedal Thread: 9/16"x20 or 14x1,25

Chain size: 1/2" x 1/8"

Torque figure:

BB-7500

Spindle type: Square

Spindle Length: 107mm (BSC) or 109mm (ITA)

Chain Line:

Available Threadings: BSC, FR or ITA

Torque figure:

Tool:

HB-7520

Large Flange Wheel Hubs.

No. of Spoke Holes: 36, 32 or 28

Front Overlock nut dimensions: 100mm

Rear Overlock nut dimensions: 110mm or 120mm

SS-7500

Chain size: 1/2" x 1/8"

Thread: 1,37"x24TPI

Available Teeth: 13, 14, 15 or 16 teeth

HP-7500

Thread Dimensions: BSC or FR

Lock Washer type:

A:

B:

C:

D:

l1: 21mm

l2: 11.5mm

L:

Dura-Ace 7600 (1986-1994)

FC-7600

BCD: 144

Avail. Crank Lengths: 165mm, 167.5mm, 170mm, 172.5mm or 175mm

Pedal Thread: 9/16"x20TPI

Chain size: 1/2" x 1/8" or 1/2" x 3/32"

Torque figure: 35-50nm

BB-7600

Caged ball bearings. Available in BSC, FR or ITA. 109mm

Spindle type: Square

Spindle Length: 109mm

Chain Line:

Available Threadings: BSC, FR or ITA

Torque figure:

Tool:

BB-7610

Industrial ball bearings version of BB-7600. Different specifications listed.

Chain Line: 42.5mm

Available Threading: BSC, NJS or ITA

Torque figure: 50-70nm

Tool: TL-UN74-S

HB-7600 (Small flange)

No. of Spoke Holes: 36, 32, 28 or 24

Front Overlock nut dimensions: 100mm

Rear Overlock nut dimensions: 110mm or 120mm

HB-7600 (Large flange)

No. of Spoke Holes: 36, 32, 28 or 24

Front Overlock nut dimensions: 100mm

Rear Overlock nut dimensions: 110mm or 120mm

SS-7600

Chain size: 1/2" x 1/8" or 1/2" x 3/32"

Thread: 1,37"x24TPI

Available Teeth: 13, 14, 15 or 16 teeth

HP-7600

Thread Dimensions: BSC or FR

Lock Washer type:

A: 30mm (JIS) or 30.2mm

B: 27mm (JIS) or 26.4mm

C:

D:

l1: 21mm

l2: 11.5mm

L: H+37.6mm

Dura-Ace 7700 (2005-2024)

FC-7710

BCD: 144

Avail. Crank Lengths: 165mm, 167.5mm, 170mm, 172.5mm or 175mm

Pedal Thread: 9/16"x20TPI

Chain size: 1/2" x 1/8" or 1/2" x 3/32"

Torque figure: 35-50nm

Cap Torque figure: 5-7nm

BB-7700

Caged ball bearings.

Spindle type: Octalink

Spindle Length: 109.5mm

Chain Line: 42.5mm

Available Threadings: BSC or ITA

Torque figure: 50-70nm

Tool: TL-UN74-S

BB-7710

Industrial ball bearings version of BB-7700. Different specifications listed.

Available Threadings: BSC

HB-7710

Small Flange Wheel Hubs.

No. of Spoke Holes: 36, 32, 28 or 24

Front Overlock nut dimensions: 100mm

Rear Overlock nut dimensions: 110mm or 120mm

HP-7410

Thread Dimensions: BSC or FR

Lock Washer type: Small Notch or Notch

A: 30mm (JIS) or 30.2mm

B: 27mm (JIS) or 26.4mm

C: 22.3mm

D: 32mm

l1: 24.1mm

l2: 13.5mm

L: H+37.6mm

Track-specific Frame Parts

N-103 (12/1972-1974)

Standard Track Fork Ends.

NC-100 (1975-1981)

Low-er end Track Fork Ends.

NC-200 (12/1978-1981)

High-er end Track Fork Ends. Appeared first in a catalog dated December 1978 .

FE-SF10 (1981)

Low-er end Track Fork Ends. (Most likely a rename of the NC-100 to meet more appropriately their newly made nomenclature)

FE-UF10 (1981)

High-er end Track Fork Ends. (Most likely a rename of the NC-200 to meet more appropriately their newly made nomenclature)

Sources

This template displays the list of footnotes at the end of an article and provides additional formatting and organizing options. After hitting "Apply changes" and turning back to VE read mode, you will not see the references list. After hitting "Publish page" and turning back to normal read mode the reference list will reappear with the changes applied, see T53146.

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[1]

[2]

Shimano Dura-Ace Track

Dura-Ace Track (1972[1]-1978[2])

GA-100

GB-100

HA-300 (previously called H-741 or H-841 for front and rear wheel hubs respectively)

FA-200 (previously called FR-912>FR-916)

UA-200 (Previously called K-902)

HS-741 or HS-841

Dura-Ace 7000 (or 10) (1977-1981)

FC-7000 (previously called GA-110)

HB-7020 (previously called HA-310)

CN-7000 (previously called QA-100)

SS-7000 (previously called FA-210)

Dura-Ace 7500 (1981-1984)

FC-7500

BB-7500

HB-7520

SS-7500

HP-7500

Dura-Ace 7600 (1986-1994)

FC-7600

BB-7600

BB-7610

HB-7600 (Small flange)

HB-7600 (Large flange)

SS-7600

HP-7600

Dura-Ace 7700 (2005-2024)

FC-7710

BB-7700

BB-7710

HB-7710

HP-7410

Track-specific Frame Parts

N-103 (12/1972-1974)

NC-100 (1975-1981)

NC-200 (12/1978-1981)

FE-SF10 (1981)

FE-UF10 (1981)

Sources

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Dura-Ace Track (1972^[1]-1978^[2])