The specs for the WLS are: 45.12ci, (739.38cc), 2.75" x 3.81" bore/stroke, 5:1 compression, 23.5 hp @4,600 rpm, Linkert carb, duplex chain primary, spring fork, 3.375 gallon fuel tank, 7.5 pints oil, 65mph.
Universal changes-all models: Oxide piston coating, centrifugally controlled oil feed pump, 7" air cleaner, plain type aluminum hand lever, "airplane style" speedo-(black face with large silver numbers), 16" wheels standard-(18" optional), battery grounded to frame.

Flathead 45ci, 3 speed	# mfg.	Price
WL high compression	4277	$350
WLD Sport Solo	455	$365
WLDR Special Sport Solo	171	$385
Servi-Car, 45ci, 3 speed and reverse
G, tow bar	607	$515
GA, without tow bar	221	$500
GD Large Comprtment, without tow bar	195	$515
GDT Large Compartment, tow bar	136	$530
Specialty models
WLA 45ci for US Army	2460
UMG 74ci for US Army
WR Special, 45ci race	36
WLS sidecar, 45ci, 4.75:1 compression

Last year of WLDR , GD and GDT, UMG, WR Special

Sidecars & Chassis:
· LE - Sidecar single passenger
· LEC - LE chassis
· LS - sidecare for 45ci
· LSC - LS chassis
· LLE - left hand LE
· LLEC- LLE chassis
· LLS - left hand LS
· LLSC- LLS chassis
· M - Side van w/cover
· MO - Side van w/o cover
· MC - M chassis
· MWC- chassis w/57-7/8" tread
· LMC- left hand chassis

Option Groups: Standard Solo, Sport Solo, Deluxe Solo, Utility Solo, Standard Police, Deluxe Servicar, Utility Servicars, Deluxe Solo accessory, Utility for sidecar or package truck, Deluxe sport sidecar. 

Colors for 1941
Brilliant Black	Flight Red	Police Silver	Cruiser Green	Skyway Blue