LAYSHAFT ASSEMBLY, TRIUMPH T140, T160, 5 SPEED, GENUINE, 57-4900
LAYSHAFT ASSEMBLY, TRIUMPH T140, T160, 5 SPEED, GENUINE, 57-4900
Replaces OEM Part No: 57-4900
Consists of part numbers: 57-4791 (high gear), 57-4787 (4th gear), 57-4900 (layshaft),
Complete factory spec. layshaft assy.
1 piece. High quality layshaft assy to suit Triumph unit 5 speed gearbox.
NOTE: This is a new genuine hardened and tooled layshaft assembly as per Triumph factory specification, it hasn't been sitting on a shelf for over 30 years gathering dust. No rust or corrosion that will damage other gearbox components.
Please use the part numbers to verify specifics for your application.
Top quality, Genuine spare part.
Made In England.
More From This Category
GEARCHANGE RUBBER, TRIUMPH, BSA, OVAL, 57-2450, T2450, 89-3208
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KICK START COTTER PIN ASSEMBLY, TRIUMPH, BSA, GENUINE, 57-4356, T4356, 57-1222
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BEARING CIRCLIP FOR HIGH GEAR, TRIUMPH, GENUINE, 70-0489, E489, T489, 68-0024
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BEARING CIRCLIP FOR MAINSHAFT OR WHEEL , TRIUMPH, BSA, GENUINE, 57-0280
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BOLT, GEARBOX DRAIN AND LEVEL, TRIUMPH, PRE-UNIT, NOS, S46-15
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BUSH, GEARCHANGE SPINDLE, LH, INNER, TRIUMPH 750, GENUINE, 57-7009
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BUSH, GEARCHANGE SPINDLE, LH, OUTER, TRIUMPH 750, GENUINE, 57-7008
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BUSH, GEARCHANGE SPINDLE, LH, TRIUMPH, TR7, T140, GENUINE, 57-7055
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
Latest Products
ENGINE PUSHRODS (SET OF 6) TRIUMPH, BSA, T150, A75, EARLY TRIPLES, GENUINE, 70-6506, E6506
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KEY FOR LUCAS HEADLAMP HEADLIGHT SWITCH, 88SA KEY, TRIUMPH, BSA, GENUINE, 54336176
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
FORK DAMPER TUBE ASSY, TRIUMPH, PRE UNIT, 3T 5T 6T T100 T110, 1944-56 (PAIR)
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
TRIUMPH FRONT ENGINE TO FRAME BOLT, 7/16 x 3-1/2 x 20 UNF, GENUINE, 14-0254
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
TRIUMPH OIF BOTTOM ENGINE TO FRAME BOLT, 7/16 x 10-1/8 x 20 UNF, GENUINE, 21-2112
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
LEFT HAND STYLING SIDE COVER PANEL, TRIUMPH, 1979-82, T140 BONNEVILLE, GENUINE, 83-7305
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
RIGHT HAND STYLING SIDE COVER PANEL, TRIUMPH, 1979-82, T140 BONNEVILLE, GENUINE, 83-7306
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
SIDE PROP STAND PIVOT BOLT, TRIUMPH, EARLY TYPE, GENUINE, 82-3097, F3097
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
Top Sellers
KICK START COTTER PIN ASSEMBLY, TRIUMPH, BSA, GENUINE, 57-4356, T4356, 57-1222
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
GEARCHANGE RUBBER, TRIUMPH, BSA, OVAL, 57-2450, T2450, 89-3208
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KICKSTART RUBBER, TRIUMPH, SCRIPTED, OPEN END, 57-2330 A, T2330 A
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KICKSTART PINION LOCK TAB WASHER, TRIUMPH, 650, 750, GENUINE, 57-2240, T2240, T732
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
GEARCHANGE QUADRANT RETURN SPRING, TRIUMPH, 650, 750, GENUINE, 57-7051, 57-0404, T404
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KICK START RETURN SPRING, TRIUMPH, 500, 650, 750, T150, T160, 57-0031, T31
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
GEARBOX LAYSHAFT THRUST WASHER, TRIUMPH, GENUINE, 57-1607, T1607
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KICK START RUBBER, TRIUMPH, SCRIPTED, PRE-UNIT, 82-1814, F1814
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
Popular Products
GEARCHANGE RUBBER, TRIUMPH, BSA, OVAL, 57-2450, T2450, 89-3208
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
KICK START COTTER PIN ASSEMBLY, TRIUMPH, BSA, GENUINE, 57-4356, T4356, 57-1222
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BEARING CIRCLIP FOR HIGH GEAR, TRIUMPH, GENUINE, 70-0489, E489, T489, 68-0024
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BEARING CIRCLIP FOR MAINSHAFT OR WHEEL , TRIUMPH, BSA, GENUINE, 57-0280
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BOLT, GEARBOX DRAIN AND LEVEL, TRIUMPH, PRE-UNIT, NOS, S46-15
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BUSH, GEARCHANGE SPINDLE, LH, INNER, TRIUMPH 750, GENUINE, 57-7009
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BUSH, GEARCHANGE SPINDLE, LH, OUTER, TRIUMPH 750, GENUINE, 57-7008
![](/assets/themes/trojanclassic/images/product-availabile-img.png)
BUSH, GEARCHANGE SPINDLE, LH, TRIUMPH, TR7, T140, GENUINE, 57-7055
![](/assets/themes/trojanclassic/images/product-availabile-img.png)