2023 Drag & Parts Unlimited Update

PISTON & PISTON KITS

OFFROAD

0931-1118

CYLINDERS AND CYLINDER KITS • Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders • Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise •Nickel silicon carbide-plated for long life

• Kits come complete with gaskets, cylinder, piston, rings, pin and clips • Replacement Vertex piston, rings, clips and pins also available; see pages 1183-1199 of the 2023 Parts Unlimited Offroad catalog •Made in the U.S.A.

FITS MODEL YAMAHA WR250F 20-22

DESCRIPTION

COMPRESSION RATIO

BORE (MM)

PART #

SUG. RETAIL

0931-1117 0931-1118 0934-7521 0931-1117 0931-1118 0934-7521 0931-1117 0931-1118 0934-7521

$323.95 538.95

Standard bore cylinder Standard bore cylinder kit +3mm Big Bore gasket kit Standard bore cylinder Standard bore cylinder kit +3mm Big Bore gasket kit Standard bore cylinder Standard bore cylinder kit +3mm Big Bore gasket kit

-

77 77

13.8:1

99.95

- -

-

323.95 538.95

YZ250F 19-22

77 77

13.8:1

99.95

- -

-

323.95 538.95

YZ250FX 20-22

77 77

13.8:1

99.95

-

-

0910-6551

PISTONS •Machined from 2618-T6 high-tensile forged aluminum •Dome/​dish features smooth flowing radii; require no deburring or preparation •JE designs are specifically engineered for extreme applications including professional competition •Pro Series pistons available for select models: features include internal and external bracing, dedicated embossed forgings for weight reduction, specialized processes such as internal milling the internal struts, along with dedicated accumulator groove and forged side relief • Pins, pin fitment, lock and rings included •Made in the U.S.A. •See pages 1177-1178 of the 2023 Parts Unlimited Offroad catalog for the full line of JE Pistons

FITS MODEL

DISPLACEMENT

BORE

OVERSIZE

COMPRESSION RATIO

PART #

SUG. RETAIL

HONDA CRF250R 20-22

0910-6551 0910-6552

$340.69 340.69

249cc 249cc

79mm 79mm

STD STD

14.0:1 14.5:1

YAMAHA YZ250F 20-22

0910-6543 0910-6544

250.64 250.64

250cc 250cc

77mm 77mm

STD STD

14.0:1 14.5:1

BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM

232

2023 | OFFROAD UPDATE