High-Lift Camshafts, Cam Sprocket - Yamaha YZF-R1 Kit Manual

12. High-lift Camshafts, Cam Sprocket
High-lift Camshafts
Parts List
No. PART No.
1 2CR-12170-70
2 2CR-12180-70
Cam Sprocket
Parts List
No. PART No.
3 2CR-12176-70
This camshaft has a cam profile etc. changed
from the STD one.
Possible to adjust the valve timing using the
long holes on the cam sprocket.
USE THESE OVAL HOLES FOR
TIMING ADJUSTMENT.
The set of the camshaft, valve spring, ECU
and air funnel must be used in the following
combination.
MODEL CAMSHAFT (IN) CAMSHAFT (EX) VALVE SPRING
2015
2CR-12170-70 2CR-12180-70 2CR-A2110-70
2016
PART NAME
SHAFT, CAM 1
SHAFT, CAM 2
PART NAME
SPROCKET, CAM
2
1 3
Tightening torque 24±2Nm
NOTICE
Using in other combinations may possibly
damage the engine.
Be sure to use in the combination as
stated below.
– 28 –
Q'TY REMARKS
1 INT
1 EXT
Q'TY REMARKS
INT/EXT-shared use
1
ECU AIR FUNNEL SET
2CR-8591A-70 MGC-191114-00
2CR-8591A-71 2CR-1440B-70