LAYSHAFT GEAR, 5TH, TRIUMPH, 5 SPEED, GENUINE, 57-4791
LAYSHAFT GEAR, 5TH, TRIUMPH, 5 SPEED, GENUINE, 57-4791, 57-4550
Replaces OEM Part No: 57-4791 (now replaces 57-4550)
Complete factory spec. gear.
1 piece. High quality gear to suit Triumph unit 5 speed gearbox.
NOTE: This gear now replaces the early 5 speed layshaft 5th gear (57-4550) but will require the shamfered edge to be machined flat.
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)