1.

YAMAHA RS Cylinders
Model: RS-010
Original Size: 49 x 54 (101cc)

Big Bore Size: 55/56/57/58.5/59/61/62/63/65/66/69/70

RS-01049：RS Original 49 cylinder

RS-01054：RS Big ...

2.

YAMAHA RS Oversize Cylinder Head
Model: RS-020
RS-02024/21：RS Oversize Cylinder Head 24/21.

RS-02028/23：RS Oversize Cylinder Head 28/23.

3.

YAMAHA RS Microns Stroke Extended Crank Shaft
Model: RS-030
RS100-030 ：RS100 crank shaft

RS-030300-13：RS300 microns stroke extended crank shaft-13

RS-030300-15：RS300 microns stroke extended crank shaft-...

4.

YAMAHA RS Oversize Cylinder Head Kit
Model: RS-090
RS-090100： RS Oversize Cylinder Head Kit.

5.

YAMAHA RS Oil Cooler Kit
Model: RS-050
RS-050：RS Oil Cooler Kit.

6.

YAMAHA Cygnus Cylinders
Model: CYG-010
Cygnus125 Original Size: 52.4 x 57.9 (124.6cc)

Big Bore Size: 58.5/59/60/61/62/63/63.5/64/65/66/67/68/69

CYG-01058.5：Cygnus125 Big bore 5...

7.

YAMAHA Cygnus Oversize Cylinder Head (4V)
Model: CYG-020
CYG-200-22.5/21.5： Cygnus Oversize Cylinder Head(4v)22.5/21.5

CYG-200-23/22.5： Cygnus Oversize Cylinder Head(4v)23/22.5

CYG-200-23.3/23.3： Cyg...

8.

YAMAHA Cygnus Microns Stoke Extended Crank Shaft
Model: CYG-030
CYG-030200： Cygnus 200 Microns Stoke Extended Crank Shaft.

CYG-030300 ：Cygnus 300 Microns Stoke Extended Crank Shaft.

CYG-030450 ：Cygnus 450 M...

9.

YAMAHA Cygnus Oil Cooler Kit
Model: CYG-050
CYG-050：Cygnus Oil Cooler Kit.

10.

YAMAHA Cygnus cylinder kit
Model: CYG-090
CYG-090：Cygnus Camshaft+920 microns stroke extended crank shaft+oversize cylinder head <4V>23.3/23.3+Cygnus Big bore 74mm forging Cylinder