ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

Vertex

GASGAS Models - 2 Stroke

Piston Type

Years

Size

Piston Kit

Piston Rings 56-R9403.V 56-R9404.V 56-R9404.V 56-R9339.V 56-R9339.V 53008004700 56-R9339.V 56-R9332.V 56-R9307.V 56-R9331.V 56-R9350.V 56-R9307.V 56-R9307.V 56-R9307.V 56-R9331.V 56-R908.V 56-R9311.V

Piston Pin

Piston Clips 72065.EACH 72065.EACH 72065.EACH 72050.EACH

Small End Bearing

2021 - 24 39.5mm 23429AB 2021 - 24 45mm 23430AB

MC 50 MC 65 MC 65 MC 85

715036 715332 715332 715378 715378 711119 715378 711127 711127 711127 711127 711127 711127 711127 715130 715258

56-838. VERTEX 56-827. VERTEX 56-827. VERTEX 56-7997. VERTEX 56-7997. VERTEX 56-7997. VERTEX 56-7997. VERTEX 56-800. VERTEX 56-800. VERTEX 56-800. VERTEX 56-800. VERTEX 56-800. VERTEX 56-800. VERTEX

Race Evolution 2021 - 24 45mm 24447AB

2021 - 24 47mm 24212A 2021 - 24 47mm 24279A

MC 85 FlatHead

Race

72050 72050 72050 72071 72071 72071 72071 72071 72071 72071 72055 72058

Race Evolution 2021 - 24 47mm 24446A

MC 85 single ring 0,8

2021 - 24 47mm 24355A 2003 - 10 54mm 23195A 2021 - 24 54mm 23928A 2021 - 24 54mm 24243A

MC 85 12⁰ Head

Race

EC / MX 125 - Halley - SM

MC 125 Twin Ring MC 125 Single Ring MC 125 Single Ring 0,8

Race

Race Evolution 2021 - 24 54mm 24445A

2021 - 24 54mm 24427A 2021 - 24 54mm 24520A 2021 - 24 54mm 24419A 2002 - 21 54mm 22766A

MC 125 12⁰ Head Single Ring MC 125 12⁰ Head Twin Ring

Race Race

MC 125 Single Ring

Pro Race

TXT 125 TXT 200 EC 250 EC 250 MC 250 EC 300 EC 300

2002

64mm 22767A

72074.EACH 72048.EACH 72048.EACH 72074.EACH 72048.EACH Piston Clips 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each 72106.Each

2002 - 19 66.4mm 23249A 2021 - 24 66.4mm 23630A 2022 - 24 66.4mm 23630A 2002 - 19 72mm 23761A 2021 - 24 72mm 24244A

56-7924. VERTEX 56-7924. VERTEX

56-8020. VERTEX 56-8020. VERTEX

56-R9399. VERTEX

56-R9502.V 56-R9312.V 56-R9312.V Piston Rings 56-R9406.V 56-R9406.V 56-R9406.V

715372

56-7924. VERTEX 56-7924. VERTEX

56-8020. VERTEX

Models - 4 Stroke EC 250F Comp. 12.8:1

Piston Type

Years

Size

Piston Kit

Piston Pin

Small End Bearing

2021 - 23 78mm 24196A 2021 - 23 78mm 24114A

715441 715441 711195

- - - - - - - - - - - - - - - - - - - - - - - - - - -

EC 250F High Comp. 13.5:1 EC 250F High Comp. 13.5:1

GP Racer Choice 2021 - 23 78mm 24115A

2024

EC 250F

81mm 24615A 81mm 24634A

590281000002 715441 590281000002 715441

GP Racer Choice 2024

EC 250F High Comp. MC 250F Comp. 14.4:1

2021 - 23 78mm 24097A 2021 - 23 78mm 24114A

56-R9406.V 56-R9406.V 56-R9406.V 56-R9361.V

715441 715441 715441 715441

MC 250F High Comp. 14.7:1 MC 250F High Comp. 14.5:1 MC 250F Comp. 14.4:1 (Big Bore)

GP Racer Choice 2021 - 23 78mm 24115A

2021 - 23 78mm 24142A

2024

MC 250F

81mm 24615A 81mm 24634A

590281000002 715441 590281000002 715441

GP Racer Choice 2024

MC 250F High Comp. EC 350F Comp. 14.0:1

2021 - 23 88mm 24098A 2021 - 23 88mm 24116A 2021 - 23 90mm 24238A

56-R9401. VERTEX 56-R9401. VERTEX

715431 715431 715431 715431 715431 715431 715431 715431 715471 715471 711197 711197 711197

72098.Each.Each 72098.Each.Each 72098.Each.Each 72098.Each.Each 72098.Each.Each 72098.Each.Each 72098.Each.Each 72098.Each.Each

EC 350F High Comp. 15.1:1 EC 350F Comp. 14.0:1 (Big Bore)

56-R9407.V

2024

EC 350F

88mm 24632A

56-R9401. VERTEX 56-R9401. VERTEX 56-R9401. VERTEX

2022 - 23 88mm 24098A 2022 - 23 88mm 24116A 2022 - 23 90mm 24238A

MC 350F Comp. 14.0:1

MC 350F High Comp. 15.1:1 MC 350F Comp. 14.0:1 (Big Bore)

56-R9407.V

2024 2024 2024

MC 350F

88mm 24632A 95mm 24209A 95mm 24211A

56-R9401. VERTEX 56-R9402. VERTEX 56-R9402. VERTEX

72099.Each 72099.Each 72099.Each 72099.Each 72099.Each 72099.Each 72099.Each

EC 450F Comp. 11.8:1

EC 450F High Comp. 12.8:1

2021 - 23 95mm 24099A 2021 - 23 95mm 24112A

56-R9402.V 56-R9402.V 56-R9402.V

MC 450F Comp. 12.6:1

MC 450F High Comp. 13.6:1 MC 450F High Comp. 13.3:1

GP Racer Choice 2021 - 23 95mm 24113A

2024

95mm 24618A 95mm 24635A

590295000004 715471 590295000004 711241

MC 450F Comp. 13.1:1

GP Racer Choice 2024

MC 450F High Comp. 13.7:1

FSE 450

2003 - 04 95mm 22953A

56-R9334.V

711140

72075

HM MOTO Models - 2 Stroke

Piston Type

Years

Size

Piston Kit

Piston Rings 56-R9335.V

Piston Pin

Piston Clips

Small End Bearing

CRE 50 CRE 260

1995 - 04 40.3mm 22088A 1989 - 00 68mm 22227A

715038

72025

72074.EACH

56-R911.V

56-7924. VERTEX

Models - 4 Stroke

Piston Kit

Piston Rings Piston Pin

Piston Clips

Piston Type

Years

Size

CRM 125 Derapage Liquid Cooled Std. Comp. 14.1:1 CRF 125Z-CRE 125RR - Locusta Liquid Cooled High Comp. 16.1:1

52mm 23935A

56-R9329.V

715029

72050

52mm 23516A

56-R9329.V

715029

72050

*Please visit our website for current prices

* Note; Most Kits are available from standard size up to +2.00mm over size *

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

E45a

Made with FlippingBook - Online magazine maker