Piston Assy

Brand: Mortch Motor
Product Code: MICF0800-0400B0-0002

Product Viewed: 123

Availability: In Stock

Weight: 0.51kg

0 reviews / Write a review

¥150.00 8 SOLD

Shipping To：

More Quotes

CFMoto Piston Assembly (91mm)

OEM Part Number 0800-0400B0-0001 / 0800-0400B0-0002

Fits CFMoto 400cc, 500cc, 550cc, 800cc, 850cc and other models engine

📋 Product Overview

This is a genuine quality CFMoto piston assembly, including piston, piston rings, piston pin and circlips. Directly replaces OEM part numbers 0800-0400B0-0001 (Mark I) and 0800-0400B0-0002 (Mark II). The two marked pistons have slightly different dimensions. Mark I and Mark II are interchangeable, providing standard size piston components for engine overhaul. Made of high-quality alloy casting, ensuring perfect fit with the cylinder wall and long service life.

✨ Genuine Quality: Manufactured to CFMoto original standards, ensuring precise dimensions, weight and material to meet high engine performance requirements.

📐 Specifications

Part Number: 0800-0400B0-0001 (Mark I) / 0800-0400B0-0002 (Mark II)

Piston Diameter (Standard): 91mm

Piston Pin Size: 22mm x 56mm

Mark I Piston Size: 90.94mm - 90.95mm

Mark II Piston Size: 90.95mm - 90.96mm

📦 Kit Contents (CF800cc Piston Set Example)

0800-040001-0001 - Piston (Front/Rear cylinder installation direction must be observed)
0800-0400A0 - Piston Ring Set
0800-040002 - Piston Pin (22x56mm)
0800-040005 - Piston Pin Circlip

⚠️ Important Installation Direction Note:

Front Cylinder Piston: Mark on piston must face intake side.
Rear Cylinder Piston: Mark on piston must face exhaust side.

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

🔧 Compatible Models/Engines (Full List)

🏍️ 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 FOR CF500ATR-5L/5S
ATV CF500ATR-5S(T3b) COBALT T3 191R FOR CF500ATR-5L/5S
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 CF800(Z8) ZForce 800EX 2V91W(Z8)
SSV CF800(CA) ZForce 800EX 2V91W(Z8-US)
SSV CF800(US) ZForce 800EX 2V91W(Z8-US)
SSV CF800US-A ZForce 800 Trail 2V91W(Z8)
SSV CF800US-A(CA) ZForce 800 Trail 2V91W(Z8)
SSV CF800US-A(US) ZForce 800 Trail 2V91W(Z8-US)
SSV CF800UTR ZForce Z8-EX 2V91W FOR CF800UTR
UTV CF800-3 UForce 800 2V91W(U8)
UTV CF800-3(CA) UForce 800 2V91W(U8-CA)
UTV CF800-3(US) UForce 800 2V91W(U8-US)
UTV CF800UTR-2 UForce 800 2V91W FOR CF800UTR-2
UTV CF800UTR-2(GD) UForce 800 2V91W FOR CF800UTR-2
UTV CF800UTR-2(HLG) UForce 800 2V91W FOR CF800UTR-2
UTV CF800UTR-2(KSR) UForce 800 2V91W FOR CF800UTR-2
UTV CF800UTR-2(SS) UForce 800 2V91W FOR CF800UTR-2
UTV CF800UU-A UForce 800 2V91W(U8)
UTV CF800UU-A(AU) UForce 800 2V91W(U8)
UTV CF800UU-A(HLG) UForce 800 2V91W(U8)
UTV CF800UU-A(KSR) UForce 800 2V91W(U8)
ATV CF800ATR-3 CForce 850XC 2V91W-A
ATV CF800ATR-3(GD) CForce 850XC 2V91W-A
ATV CF800ATR-3(HLG) CForce 850XC 2V91W-A
ATV CF800ATR-3(KSR) CForce 850XC 2V91W-A
ATV CF800ATR-3(SS) CForce 850XC 2V91W-A
ATV CF800AU-2A CForce 850XC 2V91W-A
ATV CF800AU-2A(AU) CForce 800XC/CForce 850XC 2V91W-A(AU)
ATV CF800AU-2A(CA) CForce 800XC/CForce 850XC 2V91W-A(CA)
ATV CF800AU-2A(HLG) CForce 800XC/CForce 850XC 2V91W-A(CA)
ATV CF800AU-2A(KSR) CForce 800XC/CForce 850XC 2V91W-A
ATV CF800AU-2A(RU) CForce 800XC/CForce 850XC 2V91W-A
ATV CF800AU-2A(ST) CForce 800XC/CForce 850XC 2V91W-A
ATV CF800AU-2A(US) CForce 850XC 2V91W-A(US)
ATV CF800AZ-2A CForce 800XC 2V91W-A
ATV CF800AZ-2A(CA) CForce 800XC 2V91W-A
ATV CF800AZ-2A(US) CForce 800XC 2V91W-A
SSV CF800SU-2 ZForce 800 Trail 2V91W-B
SSV CF800SU-2(US) ZForce 800 Trail 2V91W-B
SSV CF800SZ-2 ZForce 800 Trail 2V91W-B
SSV CF800SZ-2(AU) ZForce 800 Trail 2V91W-B
SSV CF800SZ-2(CA) ZForce 800 Trail G2 2V91W-B
SSV CF800SZ-2(ST) ZForce 800 Trail 2V91W-B
SSV CF800SZ-2(US) ZForce 800 Trail 2V91W-B
ATV CF800AU-2AF CForce 800XC/CForce 850XC 2V91W-D
ATV CF800AU-2AF(HLG) CForce 800XC/CForce 850XC 2V91W-D
ATV CF800AU-2AF(KSR) CForce 800XC/CForce 850XC 2V91W-D
SSV CF800SU-3 ZForce 800 SPROT 2V91W-G
ATV CF800AU-2B CForce 800 2V91W-S

📌 Compatibility Note: This piston assembly fits the CFMoto 400cc (191Q), 500/550cc (191R) and 800/850cc (2V91W) engine models listed above. Please select the correct part number according to your original engine code and piston marking (Mark I/Mark II). Be sure to follow the front/rear cylinder piston orientation marks during installation.

⚙️ Product Features

Direct OEM Replacement: Precisely matches CFMoto part numbers 0800-0400B0-0001 and 0800-0400B0-0002.
Mark I & Mark II Available: Two standard size grades to accommodate different cylinder wear tolerances, ensuring optimal fit clearance.
Complete Kit: Includes piston, piston rings, piston pin and circlips, meeting all overhaul needs in one set.
High-Quality Alloy Casting: Made of high-strength aluminum alloy, lightweight with good thermal conductivity, capable of withstanding high combustion pressure.
Precision Machining: Accurate piston skirt profile and ring groove tolerances reduce friction, ensuring good sealing and oil control.

✅ Maintenance Tip: When replacing pistons, always inspect or replace cylinder liners (boring or replacement may be necessary 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 end gap positioning. Use genuine piston pin circlips and ensure they are fully seated in their grooves.

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

🔧 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.