Suzuki GSX R 1000 Page 51
ENGINE
DESIGN
Engine Design
4-10
4) Lightweight Moving Parts
(1) Secondary Balancer Shaft
The new GSX-R1000 uses a secondary balancer shaft.
The balancer shaft counteracts the increase in secondary vibration normally caused by a
displacement increase.
The secondary balancer shaft is held by plain metal insert bearings, instead of conventional
needle bearings.
Compared to conventional needle-bearing-type balancer system, the plain metal bearing balancer
system is compact and 200 grams lighter.
Furthermore, the wall thickness of the secondary balancer shaft on the 2003 GSX-R1000 is
thinner than the 2002 GSX-R1000: the inner diameter of hollow secondary balancer shaft is
increased from 10mm on the 2002 GSX-R1000 to 12mm on the 2003 GSX-R1000, while outer
diameter is 23mm, which is unchanged. This change reduces the weight of balancer shaft by 30
grams compared to the 2002 GSX-R1000.
2003 GSX-R1000 Balancer System
Conventional Balancer System
A
B
