APE - Transmissions

TRANSMISSION UNDERCUTTING

Undercutting a transmission involves machining angles on the engagement dogs and slots to prevent the transmission from jumping out of gear under load. There are three types of undercuts available from APE.

UNDERCUT...
Angular cutting of the engagement dogs to keep from slipping out of gear under load.

RACE CUT....
Undercutting with slight ramps cut on the face of the engagement dogs to allow smoother transition into gears with less kill time if using an air shifter. Good for street/strip use.

PRO STREET CUT....
A more aggressive version of the race cut with sharper angled ramps to allow minimum kill time. For drag use only.

Note: Race Cut and Pro Street Cut are not available for some models. See chart below.

Under cutting notes... Some of the newer sportbikes are coming from the factory with undercut gears in the transmission. When you send us your trans, if it has factory undercut that is adequate, you will not be charged for undercutting that gear or gears.
If dogs are rounded off due to repeatedly slipping out of gear of missed shifts, they can not be undercut. You will be notified by APE tech staff if any of your trans parts are unusable.

What Exactly is Undercutting?

The transmission gears lock together with a series of "dogs' or "dogs and slots" The photo below shows several of the dogs engaged together so that both gears turn together. Under hard use, the gears can began to separate until the dogs become disengaged, this causes the transmission to jump out of gear.

Now notice in the photo the dogs that are in the circle. They both have angles cut on them where they meet. This causes them to lock together. They cannot separate without first backing up to unload the angles. This is an undercut. On APE transmissions, all of the dogs get these precise angle cuts.

"UP AND DOWN" cuts have angles machined on both sides of the dog so it works the same way under acceleration load and deceleration load. For road race engines only. Up And Down cuts are double price.

SUZUKI	PART NUMBER	PRICE
GS1000 UNDERCUT	LC55-1	$444.07
GS1100 / 1150 UNDERCUT	LC55-1	$444.07
GSXR600/750 UNDERCUT	LC54-1	$487.63
KATANA 600 UNDERCUT	LC54-1	$487.63
RF600 UNDERCUT	LC54-1	$487.63
SV650 UNDERCUT	LC54-1	$487.63
GSXR1000 ALL UNDERCUT	LC56-1	$544.50
GSXR1000 ALL RACE CUT	LC56-2	$594.50
GSXR1000 ALL PRO STREET CUT	LC56-3	$644.50
GSXR1100 1986-1992 UNDERCUT	LC55-1	$444.07
GSXR1100 1993-1998 UNDERCUT	LC55-1	$444.07
HAYABUSA GEN 1 UNDERCUT	LC57-1	$553.79
HAYABUSA GEN 1 RACE CUT	LC57-2	$603.79
HAYABUSA GEN 1 PRO STREET CUT	LC57-3	$653.79
HAYABUSA GEN 2 UNDERCUT	LC58-1	$608.90
HAYABUSA GEN 2 RACE CUT	LC58-2	$658.90
HAYABUSA GEN 2 PRO STREET CUT	LC58-3	$708.90

KAWASAKI
KZ900/1000 UNDERCUT	LC55-1	$444.07
GPZ/J models UNDERCUT	LC55-1	$444.07
ZX6 THRU '97 UNDERCUT	LC54-1	$487.63
ZX6 '98 LATER UNDERCUT	LC56-1	$544.50
ZX7 UNDERCUT	LC54-1	$487.63
ZX9 THRU '97 UNDERCUT	LC54-1	$487.63
ZX9 '98 LATER UNDERCUT	LC56-1	$544.50
ZX10 UNDERCUT	LC56-1	$544.50
ZX10 RACE CUT	LC56-2	$594.50
ZX10 PRO STREET CUT	LC56-3	$644.50
ZX11 UNDERCUT	LC54-1	$487.63
ZX12 UNDERCUT	LC56-1	$544.50
ZX12 RACE CUT	LC56-2	$594.50
ZX12 PRO STREET CUT	LC56-3	$644.50
ZX14 UNDERCUT	LC58-1	$608.90
ZX14 RACE CUT	LC58-2	$658.90
ZX14 PRO STREET CUT	LC58-3	$708.90

YAMAHA
FJ1100/1200 UNDERCUT	LC59-1	$452.58
FZR1000 UNDERCUT	LC59-1	$452.58
FZR400 UNDERCUT	LC56-1	$544.50
R1 UNDERCUT	LC60-1	$572.33
R6 UNDERCUT	LC60-1	$572.33
V-MAX UNDERCUT	LC59-1	$452.58

HONDA
CB750 sohc UNDERCUT	LC59-1	$452.58
CBR600 UNDERCUT	LC56-1	$544.50
CBR1000RR 2005 & later UNDERCUT	LC56-1	$544.50

LC62	UNDERCUT 2ND GEAR ONLY	$214.50
LC63	Pro-cut Hayabusa Tran. (up and down cut)	$988.90
LC64	Magnaflux transmission	$163.35
LC65	Hardweld trans. gear (ea)	$169.40

Up and Down cuts double price.

There are times when small things like clips and spacers are unusable. These parts will be replaced at a nominal charge when servicing transmissions.

Call APE to place a transmission work order. (661) 256-7309

Please read our shipping instructions carefully.

Include an APE work order form when sending parts for labor.

Ship parts to:
APE
7347 Rosamond Bl.
Rosamond, Ca. 93560

CLICK TO GO TO THESE INDIVIDUAL TRANSMISSION PAGES

HAYABUSA	KAWASAKI KZ	SUZUKI GS	KAWASAKI ZX

APE provides online pricing as a service convenience only. These prices are not binding and are subject to updates without notice. Though we try hard to maintain accurate up-to-the-minute online pricing, it is best to call APE and check with the desk for pricing if you have any questions.