Triumph TR3B (TCF) TR4-4A-5-250 Interchanging Components - 4 Synchro

Order your Triumph TR3B (TCF) TR4-4A-5-250 Interchanging Components - 4 Synchro ⛽ Low prices and fast, worldwide delivery ✈ British car experts ♚ Call ☎ 01522 568000 or ☎ 1-855-746-2767
Part No.: GRID200111

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7
Care must be taken to ensure the angular cut of the teeth match between the constant
gear and constant pinion shaft, by holding them together prior to installation in the gearbox.
This angle is called the ‘helix’.
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
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216044
No longer available
7
The gear set 148949 contains a constant pinion shaft and a constant gear. It should be used as a complete set to service gearboxes gearboxes fitted with imperial mainshafts 208051 and 208052.
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
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148949
In stock
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£295.00 ex VAT£354.00 inc UK VAT
Quantity
7
The gear set 219126 contains a constant pinion shaft and a constant gear.
It should be used as a complete set to service gearboxes with metric mainshafts.

Care must be taken to ensure the angular cut of the teeth match between the constant
gear and constant pinion shaft, by holding them together prior to installation in the gearbox.
This angle is called the 'helix'.
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
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219126
In stock
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£295.00 ex VAT£354.00 inc UK VAT
Quantity
7
The gear set 219126 contains a constant pinion shaft and a constant gear.
It should be used as a complete set to service gearboxes with metric mainshafts.

Care must be taken to ensure the angular cut of the teeth match between the constant
gear and constant pinion shaft, by holding them together prior to installation in the gearbox.
This angle is called the 'helix'.
Model-Type 3 TR6 (g)CD21769 to (c)CR5000
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219126
In stock
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£295.00 ex VAT£354.00 inc UK VAT
Quantity
7
The gear set 219126 contains a constant pinion shaft and a constant gear.
It should be used as a complete set to service gearboxes with metric mainshafts.

Care must be taken to ensure the angular cut of the teeth match between the constant
gear and constant pinion shaft, by holding them together prior to installation in the gearbox.
This angle is called the 'helix'.
Model-Type 4 TR6 from (c)CR5001 (J type overdrive)
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219126
In stock
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£295.00 ex VAT£354.00 inc UK VAT
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This is a precision ground steel sleeve which should be pressed into the constant pinion gear to enable the proper fitment of bearing 145008 and therefore allowing imperial nosed mainshafts to be compatible with the later metric bore constant pinion gear (part no. 219126).
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145008X
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£13.40 ex VAT£16.08 inc UK VAT
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158368
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£15.10 ex VAT£18.12 inc UK VAT
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158368
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£15.10 ex VAT£18.12 inc UK VAT
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208051U
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£95.00 ex VAT£114.00 inc UK VAT
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TKC824U
In stock
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£90.00 ex VAT£108.00 inc UK VAT
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TKC832
Out of stock, expected soon Dec 20, 2024. Add to cart and Back Order
£255.00 ex VAT£306.00 inc UK VAT
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153844X
In stock
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£84.00 ex VAT£100.80 inc UK VAT
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129940
In stock
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£27.25 ex VAT£32.70 inc UK VAT
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129940
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£27.25 ex VAT£32.70 inc UK VAT
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129940
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£27.25 ex VAT£32.70 inc UK VAT
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32
The bush part no. 153238, may be considered uprated and can be used to replace 129940
Model-Type 4 TR6 from (c)CR5001 (J type overdrive)
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153238
In stock
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£23.50 ex VAT£28.20 inc UK VAT
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105630
Usually in stock at our supplier, allow 1 week for delivery
£141.00 ex VAT£169.20 inc UK VAT
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152772
In stock
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£40.00 ex VAT£48.00 inc UK VAT
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152772
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£40.00 ex VAT£48.00 inc UK VAT
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129939
In stock
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£41.00 ex VAT£49.20 inc UK VAT
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129939
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£41.00 ex VAT£49.20 inc UK VAT
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129939
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£41.00 ex VAT£49.20 inc UK VAT
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The brass second gear bush used to 1973 often breaks where its flange joins the cylindrical body. This breakage leads to excessive end float in the second and third gears, which in turn causes severe and rapid mechanical failure. A two piece steel bush and thrust washer is offered as an uprated replacement for the one piece brass item. The two piece steel bush set can not be used to replace the steel top hat shaped bush of the post 1973 gearboxes.
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5 out of 5 starsRead 1 Review(s)Rate and Review this Product
129939X
In stock
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£45.50 ex VAT£54.60 inc UK VAT
Quantity
34
Bush, part no. UKC956, may only be fitted with 2nd gear TKC454
and the appropriate thrust washers (UKC956 to UKC961)
Model-Type 4 TR6 from (c)CR5001 (J type overdrive)
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UKC956
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£30.00 ex VAT£36.00 inc UK VAT
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105629
In stock
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£145.00 ex VAT£174.00 inc UK VAT
Quantity
36
The later gear (TKC454) can be fitted to all models provided the corresponding bush (UKC956) is used.
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
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152771
No longer available
36
The later gear (TKC454) can be fitted to all models provided the corresponding bush (UKC956) is used.
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
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TKC454
In stock
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£144.00 ex VAT£172.80 inc UK VAT
Quantity
36
Bush, part no. UKC956, may only be fitted with 2nd gear TKC454
and the appropriate thrust washers (UKC956 to UKC961)
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
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UKC956
In stock
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£30.00 ex VAT£36.00 inc UK VAT
Quantity
36
The later gear (TKC454) can be fitted to all models provided the corresponding bush (UKC956) is used.
Model-Type 3 TR6 (g)CD21769 to (c)CR5000
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TKC454
In stock
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£144.00 ex VAT£172.80 inc UK VAT
Quantity
36
Bush, part no. UKC956, may only be fitted with 2nd gear TKC454
and the appropriate thrust washers (UKC956 to UKC961)
Model-Type 3 TR6 (g)CD21769 to (c)CR5000
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UKC956
In stock
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£30.00 ex VAT£36.00 inc UK VAT
Quantity
36
The later gear (TKC454) can be fitted to all models provided the corresponding bush (UKC956) is used.
Model-Type 4 TR6 from (c)CR5001 (J type overdrive)
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TKC454
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£144.00 ex VAT£172.80 inc UK VAT
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129940
In stock
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£27.25 ex VAT£32.70 inc UK VAT
Quantity
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129940
In stock
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£27.25 ex VAT£32.70 inc UK VAT
Quantity
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129940
In stock
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£27.25 ex VAT£32.70 inc UK VAT
Quantity
46
The bush part no. 153238, may be considered uprated and can be used to replace 129940
Model-Type 4 TR6 from (c)CR5001 (J type overdrive)
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153238
In stock
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£23.50 ex VAT£28.20 inc UK VAT
Quantity
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152770
In stock
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£36.50 ex VAT£43.80 inc UK VAT
Quantity
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159621
Out of stock, expected soon Nov 21, 2024. Add to cart and Back Order
£65.00 ex VAT£78.00 inc UK VAT
Quantity
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159621
Out of stock, expected soon Nov 21, 2024. Add to cart and Back Order
£65.00 ex VAT£78.00 inc UK VAT
Quantity
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140508
In stock
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£58.50 ex VAT£70.20 inc UK VAT
Quantity
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155047
Usually in stock at our supplier, allow 1 week for delivery
£79.00 ex VAT£94.80 inc UK VAT
Quantity
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155047
Usually in stock at our supplier, allow 1 week for delivery
£79.00 ex VAT£94.80 inc UK VAT
Quantity
60
It is strongly recommended that the post-73 laygear, UKC662 (with its matching
1st speed gear 152803), be used for all uprated/modified engine/competition boxes.
Model-Type 1 TR3B-TR6 (g)CT prefixes & to (g)CD20281
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128107
In stock
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£245.00 ex VAT£294.00 inc UK VAT
Quantity
60
Most TR owners know that the Stag and Police spec saloon gearboxes were uprated by modifications to the weak zones of the laygear and shaft. The rear end of the shaft and gearbox became 'metric', so this conversion would be quite difficult. These uprated laygears come complete with 3 bearings and fittings. The twin bearing fitted to the rear end, each have twice the load capacity of the original (150339). They fit the standard gearbox and layshaft, so no modifications are required. If your gearbox has suffered such a failure, you will appreciate this as a fit and forget solution.

Includes bearings and circlips.
Model-Type 1 TR3B-TR6 (g)CT prefixes & to (g)CD20281
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128107UPRATED
In stock
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£235.00 ex VAT£282.00 inc UK VAT
Quantity
60
It is strongly recommended that the post-73 laygear, UKC662 (with its matching
1st speed gear 152803), be used for all uprated/modified engine/competition boxes.
Model-Type 2 TR6 (g)CD20282 to (g) CD21768
Rate and Review this Product
128107
In stock
Most orders placed now ship tomorrow!
£245.00 ex VAT£294.00 inc UK VAT
Quantity
Most TR owners know that the Stag and Police spec saloon gearboxes were uprated by modifications to the weak zones of the laygear and shaft. The rear end of the shaft and gearbox became 'metric', so this conversion would be quite difficult. These uprated laygears come complete with 3 bearings and fittings. The twin bearing fitted to the rear end, each have twice the load capacity of the original (150339). They fit the standard gearbox and layshaft, so no modifications are required. If your gearbox has suffered such a failure, you will appreciate this as a fit and forget solution.

Includes bearings, circlips and thrust washers.
-
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128107UR
In stock
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£247.50 ex VAT£297.00 inc UK VAT
Quantity
60
It is strongly recommended that UKC662 (with its matching 1st speed
gear 152803) be used for all uprated/modified engine/competition boxes.
Model-Type 3 TR6 (g)CD21769 to (c)CR5000
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UKC662
In stock
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£202.50 ex VAT£243.00 inc UK VAT
Quantity
60
It is strongly recommended that UKC662 (with its matching 1st speed
gear 152803) be used for all uprated/modified engine/competition boxes.
Model-Type 4 TR6 from (c)CR5001 (J type overdrive)
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UKC662
In stock
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£202.50 ex VAT£243.00 inc UK VAT
Quantity
Most TR owners know that the Stag and Police spec saloon gearboxes were uprated by modifications to the weak zones of the laygear and shaft. The rear end of the shaft and gearbox became 'metric', so this conversion would be quite difficult. These uprated laygears come complete with 3 bearings and fittings. The twin bearing fitted to the rear end, each have twice the load capacity of the original (150339). They fit the standard gearbox and layshaft, so no modifications are required. If your gearbox has suffered such a failure, you will appreciate this as a fit and forget solution.

Includes bearings, circlips and thrust washers.
-
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UKC662UR
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£237.50 ex VAT£285.00 inc UK VAT
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UKC662URBRG
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£12.00 ex VAT£14.40 inc UK VAT
Quantity
12 month warranty
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Product Description

Triumph TR3B (TCF) TR4-4A-5-250 Interchanging Components - 4 Synchro
The internal components of the 4 synchro gearbox changed hardly at all during TR3B, TR4, TR4A, TR5 and TR250 production.  The problems of which replacement parts to fit really arise if you find you have a TR6 gearbox in your car - in which case the internal components changed several times during production.  Changes that are crucial are those that mean whole running assemblies must be changed rather than individual components.  Above is a table showing the gearboxes by serial number and the changes to internal components.  The four basic sets of gears are interchangeable sets, the mainshaft will of course govern their use ultimately if overdrive is used.  The most significant and frequent changes were to the helix or tooth angel of the gears - 3 in the life of the TR6!  The spigot size on the mainshaft changed from imperial to metric which required matching constant pinion gears.