Piston Set

Brand: Mortch Motor
Product Code: MICF0800-04000A-II

Product Viewed: 1025

Availability: In Stock

Weight: 0.48kg

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CFMoto Piston Kit (91mm) | w/ Linhai Cross-Reference

Fits Mark I (90.94-90.95mm) and Mark II (90.95-90.96mm) | Linhai: 1BX-11631-10 / 1BX-11631-20

Fits CFMoto 400cc, 500cc, 550cc, 800cc, 850cc engine models and multiple Linhai ATV models

📋 Product Overview

This is an OEM-quality CFMoto piston kit, including piston, piston pin, and piston pin circlips. Available in Mark I and Mark II variants with slightly different dimensions — both are interchangeable, providing standard-size piston components for engine overhaul. Manufactured from high-quality alloy casting, ensuring perfect cylinder wall fitment and long service life. Linhai cross-reference: Mark I piston 38050 / 1BX-11631-10, Mark II piston 38051 / 1BX-11631-20, piston pin 38052 / 1BX-11633-00, circlips 38048 / 1BX-11634-00.

✨ OEM Quality: Manufactured to CFMoto factory specifications, ensuring precise dimensions, weight, and material to meet high engine performance requirements.

📐 Specifications

Piston Diameter (Std) 91mm

Mark I Piston Size 90.94mm - 90.95mm Linhai: 38050 / 1BX-11631-10

Mark II Piston Size 90.95mm - 90.96mm Linhai: 38051 / 1BX-11631-20

Piston Pin Size 22mm x 56mm Linhai: 38052 / 1BX-11633-00

Piston Pin Circlips 2 pcs / kit Linhai: 38048 / 1BX-11634-00

📦 Kit Contents

0800-040001-0001(2) - Piston (front/rear cylinder orientation required) | Linhai: 38050 / 1BX-11631-10 (Mark I) or 38051 / 1BX-11631-20 (Mark II)
0800-040002 - Piston Pin (22x56mm) | Linhai: 38052 / 1BX-11633-00
0800-040005 - Piston Pin Circlips (2 pcs) | Linhai: 38048 / 1BX-11634-00

⚠️ Critical Installation Direction Notice:

Front Cylinder Piston: Piston marking must face the intake side.
Rear Cylinder Piston: Piston marking must face the exhaust side.

Incorrect installation will cause engine noise, cylinder scoring, or even severe engine damage!

🔧 Compatible Models (CFMoto by Engine Series)

🏍️ 400cc Series — 191Q Engine

ATV CF400ATR-2L CForce 450L 191Q
ATV CF400ATR-2L(T3a) CForce 450L 191Q
ATV CF400ATR-2L(T3a)(SS) CForce 450L 191Q
ATV CF400ATR-2L(T3b) CForce 450L 191Q
ATV CF400ATR-2L(T3b)(HLG) CForce 450L 191Q
ATV CF400ATR-2L(T3b)(KSR) CForce 450L 191Q
ATV CF400ATR-2L(T3b)(SS) CForce 450L 191Q
ATV CF400ATR-2S CForce 450S 191Q
ATV CF400ATR-2S(T3a) CForce 450S 191Q
ATV CF400ATR-2S(T3a)(HLG) CForce 450S 191Q
ATV CF400ATR-2S(T3a)(KSR) CForce 450S 191Q
ATV CF400ATR-2S(T3a)(SS) CForce 450S 191Q
ATV CF400ATR-2S(T3b) CForce 450S 191Q FOR CF400ATR-4L/4S
ATV CF400ATR-2S(T3b)(GD) CForce 450S 191Q FOR CF400ATR-4L/4S
ATV CF400ATR-2S(T3b)(HLG) CForce 450S 191Q FOR CF400ATR-4L/4S
ATV CF400ATR-2S(T3b)(KSR) CForce 450S 191Q FOR CF400ATR-4L/4S
ATV CF400ATR-2S(T3b)(SS) CForce 450S 191Q FOR CF400ATR-4L/4S
ATV CF400ATR-3L CForce 450L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3L(T3a) CForce 450 L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3L(T3b) CForce 450 L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3L(T3b)(HLG) CForce 450 L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3L(T3b)(KSR) CForce 450 L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3L(T3b)(SS) CForce 450L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3a) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3a)(HLG) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3a)(KSR) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3b) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3b)(GD) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3b)(HLG) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3b)(KSR) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-3S(T3b)(SS) CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400ATR-4L GOES TERROX 400L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-4L(SS) GOES TERROX 400L 191Q FOR CF400AU-3L/3S
ATV CF400ATR-4S GOES TERROX 400S 191Q FOR CF400AU-3L/3S
ATV CF400ATR-L CForce 450L 191Q
ATV CF400AU CForce 400S/450S 191Q
ATV CF400AU(AU) CForce 400S 191Q
ATV CF400AU(CA) CForce 400S 191Q
ATV CF400AU(US) CForce 400S 191Q(US)
ATV CF400AU（X4警车） CForce 400S 191Q
ATV CF400AU-3L CForce 450L 191Q-A FOR CF400AU-3L/3S
ATV CF400AU-3L(公务消防车) CForce 450L 191Q-A FOR CF400AU-3L/3S
ATV CF400AU-3S CForce 450S 191Q-A FOR CF400AU-3L/3S
ATV CF400AU-3S(GD) CForce 450S 191Q-A FOR CF400AU-3L/3S
ATV CF400AU-3S(HLG) CForce 450S 191Q-A FOR CF400AU-3L/3S
ATV CF400AU-3S(KSR) CForce 450S 191Q-A FOR CF400AU-3L/3S
ATV CF400AU-6S CForce 450S 191Q
ATV CF400AU-6S(US) CForce 450S 191Q
ATV CF400AU-A CForce 450S 191Q
ATV CF400AU-A(HLG) CForce 450S 191Q
ATV CF400AU-A(KSR) CForce 450S 191Q
ATV CF400AU-B CForce 450L 191Q
ATV CF400AU-B(HLG) CForce 450L 191Q
ATV CF400AU-B(KSR) CForce 450L 191Q
ATV CF400AU-G GOES TERROX 400S 191Q
ATV CF400AU-L CForce 400L/450L 191Q
ATV CF400AU-L(CA) CForce 400L/450L 191Q
ATV CF400AU-L(RU) CForce 400L/450L 191Q
ATV CF400AU-LF CForce 450L 191-A (KSR)
ATV CF400AU-SF CForce 450S 191Q-A
ATV CF400AU-SF(GD) CForce 450S 191Q-A
ATV CF400AU-SF(HLG) CForce 450S 191Q-A
ATV CF400AU-SF(KSR) CForce 450S 191Q-A
ATV CF400AZ-3L CForce 400 TOURING/CForce 450 L 191Q
ATV CF400AZ-3L(CA) CForce 400 TOURING 191Q
ATV CF400AZ-3L(RU) CForce 450 L 191Q
ATV CF400AZ-3L(ST) CForce 450 L 191Q
ATV CF400AZ-3L(公务消防车) CForce 450L 191Q
ATV CF400AZ-3S CForce 400/CForce 450 191Q FOR CF400AU-3L/3S
ATV CF400AZ-3S(AU) CForce 450S 191Q FOR CF400AU-3L/3S
ATV CF400AZ-3S(CA) CForce 450S 191Q FOR CF400AU-3L/3S
ATV CF400AZ-3S(ST) CForce 450S 191Q FOR CF400AU-3L/3S
ATV CF400AZ-3S(US) CForce 450S 191Q FOR CF400AU-3L/3S
ATV CF400AZ-6L CForce 450L 191Q
ATV CF400AZ-6L(CA) CForce 400 TOURING 191Q
ATV CF400AZ-6S CForce 450S 191Q
ATV CF400AZ-6S(CA) CForce 400 Classic 191Q
ATV CF400AZ-6S(US) CForce 450S 191Q
ATV CF400AZ-6S-CLS CForce 400 Classic 191Q
ATV CF400ATR CForce 450 191Q
ATV CF400ATR-5L(T3b) IRON MAX T3 191Q
ATV CF400ATR-5S(T3b) IRON T3 191Q
ATV CF400AU-2L IRON MAX L7e 191Q
ATV CF400AU-2S IRON L7e 191Q
ATV CF400AU-3LH CForce 450L 191Q
ATV CF400AU-3SH CForce 450S 191Q
ATV CF400AU-LA GOES TERROX 400L 191Q

🏍️ 500/550cc Series — 191R Engine

ATV CF500ATR CForce 520 191R-X550
ATV CF500ATR-2L CForce 520L 191R-X550
ATV CF500ATR-2L(T3a) CForce 520L 191R-X550
ATV CF500ATR-2L(T3a)(SS) CForce 520L 191R-X550
ATV CF500ATR-2L(T3b) CForce 520L 191R-X550
ATV CF500ATR-2L(T3b)(GD) CForce 520L 191R-X550
ATV CF500ATR-2L(T3b)(HLG) CForce 520L 191R-X550
ATV CF500ATR-2L(T3b)(KSR) CForce 520L 191R-X550
ATV CF500ATR-2L(T3b)(SS) CForce 520L 191R-X550
ATV CF500ATR-2S CForce 520S 191R-X550
ATV CF500ATR-2S(T3a) CForce 520S 191R-X550
ATV CF500ATR-2S(T3a)(SS) CForce 520S 191R-X550
ATV CF500ATR-2S(T3b) CForce 520S 191R-X550
ATV CF500ATR-2S(T3b)(GD) CForce 520S 191R-X550
ATV CF500ATR-2S(T3b)(SS) CForce 520S 191R-X550
ATV CF500ATR-3 CForce 520 191R-X550
ATV CF500ATR-3(T3a) CForce 520 191R-X550
ATV CF500ATR-9L CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9L(T3a) CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9L(T3b) CForce 520 L 191R FOR CF500AU-9L/9S
ATV CF500ATR-9L(T3b)(GD) CForce 520 L 191R FOR CF500AU-9L/9S
ATV CF500ATR-9L(T3b)(HLG) CForce 520 L 191R FOR CF500AU-9L/9S
ATV CF500ATR-9L(T3b)(KSR) CForce 520 L 191R FOR CF500AU-9L/9S
ATV CF500ATR-9L(T3b)(SS) CForce 520 L 191R FOR CF500AU-9L/9S
ATV CF500ATR-9S(T3a) CForce 550 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9S(T3b) CForce 550 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9S(T3b)(GD) CForce 550 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9S(T3b)(HLG) CForce 550 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9S(T3b)(KSR) CForce 550 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-9S(T3b)(SS) CForce 550 191R-E FOR CF500AU-9L/9S
ATV CF500ATR-11L GOES TERROX 500L 191R FOR CF500ATR-11L/11S
ATV CF500ATR-11L(SS) GOES TERROX 500L 191R FOR CF500ATR-11L/11S
ATV CF500ATR-11S GOES TERROX 500S 191R FOR CF500ATR-11L/11S
ATV CF500ATR-A CForce 550 191R-X550
ATV CF500AU-6B CForce 550 191R-C FOR CF500AU-6B
ATV CF500AU-6L CForce 550 191R-X550
ATV CF500AU-6L(CA) CForce 550HO 191R-X550(CA)
ATV CF500AU-7A CForce 520S 191R FOR CF500AU-7S&7L
ATV CF500AU-7C CForce 520L 191R FOR CF500AU-7S&7L
ATV CF500AU-7C(HLG) CForce 520L 191R FOR CF500AU-7S&7L
ATV CF500AU-7C(KSR) CForce 520L 191R FOR CF500AU-7S&7L
ATV CF500AU-7L CForce 520L 191R FOR CF500AU-7S&7L
ATV CF500AU-7LF CForce 520L 191R-E
ATV CF500AU-7LF(HLG) CForce 520L 191R-E
ATV CF500AU-7LF(KSR) CForce 520L 191R-E
ATV CF500AU-7S CForce 520 S 191R FOR CF500AU-7S&7L
ATV CF500AU-7S(AU) CForce 520 S 191R FOR CF500AU-7S&7L
ATV CF500AU-7S(CA) CForce 520 S 191R FOR CF500AU-7S&7L(CA)
ATV CF500AU-7S(US) CForce 500S 191R FOR CF500AU-7S&7L(US)
ATV CF500AU-7SF CForce 500S/CForce 520S 191R-E
ATV CF500AU-7SF(GD) CForce 500S/CForce 520S 191R-E
ATV CF500AU-8L COBALT MAX L7e 191R-C
ATV CF500AU-8S COBALT L7e 191R-C
ATV CF500AU-9S CForce 520/CForce 500 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9S(GD) CForce 520 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9L CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9L(GD) CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9L(HLG) CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9L(KSR) CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9L(RU) CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9L(ST) CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-9LH CForce 520 L 191R-E FOR CF500AU-9L/9S
ATV CF500AU-10S CForce 500 S 191R
ATV CF500AU-10S(US) CForce 500 S 191R
ATV CF500AZ-9S CForce 500/CForce 520 191R FOR CF500AU-9L/9S
ATV CF500AZ-9S(AU) CForce 500/CForce 520 191R FOR CF500AU-9L/9S
ATV CF500AZ-9S(CA) CForce 500/CForce 520 191R FOR CF500AU-9L/9S
ATV CF500AZ-9S(US) CForce 500/CForce 520 191R FOR CF500AU-9L/9S
ATV CF500AZ-10S CForce 500 S 191R
ATV CF500AZ-10S(CA) CForce 500 191R
ATV CF500AZ-10S(US) CForce 500 191R
SSV CF500US ZForce 500 Trail 191R-Z550
SSV CF500US(CA) ZForce 500 Trail 191R-Z550(CA)
SSV CF500US(US) ZForce 500 Trail 191R-Z550(US)
SSV CF500US-EX ZForce 550EX 191R-Z550
SSV CF500UTR ZForce 550EX 191R-Z550
SSV CF500UTR(T1a) ZForce 550EX 191R-Z550
SSV CF500UTR(T1a)(SS) ZForce 550EX 191R-Z550
SSV CF500UTR(T1b) ZForce 550EX 191R-Z550
SSV CF500UTR(T1b)(GD) ZForce 550EX 191R-Z550
UTV CF500UTR-2 UForce 550 191R-U550
UTV CF500UTR-2(GD) UForce 550 191R-U550
UTV CF500UU UForce 550 191R-U550
UTV CF500UU(CA) UForce 500 191R-U550(CA)
UTV CF500UU(US) UForce 500 191R-U550(US)
ATV CF500ATR-2LC CForce 520L 191R
ATV CF500ATR-2SC CForce 520S 191R
ATV CF500ATR-5L(T3b) COBALT MAX T3 191R
ATV CF500ATR-5S(T3b) COBALT T3 191R
ATV CF500AU-7LA GOES TERROX 500L 191R
ATV CF500AU-7SA GOES TERROX 500S 191R
ATV CF500AU-9SH CForce 520 191R

🏍️ 800/850cc Series — 2V91W Engine

ATV CF800-2 X8 2V91W(X8)
ATV CF800ATR CForce 800 2V91W(X8)
ATV CF800ATR-2 CForce 800 2V91W FOR CF800ATR-2
SSV CF800 ZForce 800EX 2V91W(Z8)
SSV CF800US-A ZForce 800 Trail 2V91W(Z8)
SSV CF800UTR ZForce Z8-EX 2V91W FOR CF800UTR
UTV CF800-3 UForce 800 2V91W(U8)
UTV CF800UTR-2 UForce 800 2V91W FOR CF800UTR-2
UTV CF800UU-A UForce 800 2V91W(U8)
ATV CF800ATR-3 CForce 850XC 2V91W-A
ATV CF800AU-2A CForce 850XC 2V91W-A
ATV CF800AZ-2A CForce 800XC 2V91W-A
SSV CF800SU-2 ZForce 800 Trail 2V91W-B
SSV CF800SZ-2 ZForce 800 Trail 2V91W-B
ATV CF800AU-2AF CForce 800XC/CForce 850XC 2V91W-D
SSV CF800SU-3 ZForce 800 SPORT 2V91W-G
ATV CF800AU-2B CForce 800 2V91W-S

📌 Compatibility Note: This piston kit fits the CFMoto models listed above with 400cc (191Q), 500/550cc (191R), and 800/850cc (2V91W) engines. Select Mark I or Mark II based on your original engine code and piston measurement. Always follow front/rear cylinder piston orientation markings during installation.

🔧 Compatible Models (Linhai)

Linhai M565LT E4
Linhai 570 PROMAX E5
Linhai T-BOSS 570 T1 (EPS)
Linhai 570 PROMAX E5, 570 PROMAX E4
Linhai M570L E4, M570L E5
Linhai 570 PROMAX T3

📌 Linhai Compatibility Note: This piston kit fits the Linhai ATV models listed above. Linhai part number cross-reference: Mark I piston 38050 / 1BX-11631-10, Mark II piston 38051 / 1BX-11631-20, piston pin 38052 / 1BX-11633-00, circlips 38048 / 1BX-11634-00.

⚙️ Features

Mark I & Mark II Options: Two standard size grades available to accommodate different cylinder wear tolerances for optimal fit. Linhai codes 38050 / 1BX-11631-10 and 38051 / 1BX-11631-20.
Complete Kit: Includes piston, piston pin, and circlips — one-stop solution for overhaul needs. Piston pin Linhai code 38052 / 1BX-11633-00, circlips Linhai code 38048 / 1BX-11634-00.
Premium Alloy Casting: High-strength aluminum alloy for light weight and excellent heat dissipation, capable of withstanding high combustion pressure.
Precision Machining: Precision skirt profile and ring grooves reduce friction, ensuring excellent sealing and oil control.
OEM Quality Assurance: Manufactured to CFMoto standards for reliable quality and stable performance.
Cross-Platform Compatibility: Fits both CFMoto and Linhai platform engines.

✅ Service Tip: When replacing pistons, always inspect or replace cylinder sleeves (hone or replace if severely worn). New pistons must be matched to cylinders to ensure proper clearance. When installing new piston rings, pay attention to ring orientation and gap positioning. Use genuine piston pin circlips and ensure they are fully seated in the grooves.

⚠️ Critical Installation Note: Before piston installation, apply clean engine oil to the piston pin, piston skirt, and cylinder wall. Use a proper piston ring compressor to install the piston/connecting rod assembly into the cylinder. When installing connecting rod bolts, always use a torque wrench and follow the specified step-tightening procedure. After installation, rotate the crankshaft to check for binding.

📑 Complete Part Number Cross-Reference Summary:

Mark I Piston: CFMoto 0800-040001-0001(2) | Linhai 38050 / 1BX-11631-10
Mark II Piston: CFMoto 0800-040001-0001(2) | Linhai 38051 / 1BX-11631-20
Piston Pin: CFMoto 0800-040002 | Linhai 38052 / 1BX-11633-00
Piston Pin Circlips: CFMoto 0800-040005 | Linhai 38048 / 1BX-11634-00
Specifications: 91mm Diameter / 22x56mm Piston Pin

This piston kit fits both CFMoto and Linhai platform engines, available in Mark I and Mark II size grades — the standard-size piston assembly for engine overhaul.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.