1. Pistons, Rings & Piston Kits Products
  2. sku: 10042673961055762
  3. WISECO CW50013

WISECO CW50013 Top Cometic Bpratv Gas Gasgas Cylinder End 0770800021 Sx/xc TC85 MC85 Rebuild Kit Piston

fits model: Sx, Xc. make: Ktm, Husqvarna. year: 1985.

Cw50013 Wiseco Cometic Bpratv Ktm 85 Sx/xc Husqvarna Tc85 Gas Mc85 Gasgas Mc Cylinder Top End Rebuild Kit Piston

( Brand: Wiseco ), ( Manufacturer Part Number: CW50013 ), ( Type: Engine Rebuild Kit ), ( Engine Type: 2-stroke ), ( Items Included: Cylinder Barrel, Gasket Set, Piston Rings, Pistons, Wrist Pins, Wrist Pin Bearing / Top End Bearing ), ( Features: Corrosion-resistant, Durable, Greasable, Sealed, The Best Parts. The Best Performance. The Best Price. ), ( Oe/oem Part Number: 0770800021, 0603061001, 47230035020, 47230035025, 47230030000, 47230033000, 47030074000, 0770540020, 47230035040, 47230035050, 47230035075, 47237008000, 47230038000, 47230006100, A41030060000, 47230007110, 47237006000, 07702300251, 50013, 855m04700, C3636, 47230038000, 47230007110 I, C3636fb, B1012, 09-b012-1, 10-054, 10-353, N1006, Wb139, Cw50013, Cw50013k01, Ring Set 1850cs, Wrist Pin S517, Circlip Cw14 ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle, Scooter, Street Motorcycle ), ( Country Of Origin: United States ), ( Performance Part: Yes ), ( Vintage Part: No ), ( California Prop 65 Warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Reproductive Harm. Www.p65warnings.ca.gov ), ( Unit Type: Unit ), ( Bpratv: The Best Parts. The Best Performance. The Best Price. ), ( Color: Multicolor ), ( Custom Detail 1: Ktm 85 Top End Kit ), ( Custom Detail 2: Gasgas 85 Piston Cylinder Kit ), ( Custom Detail 3: Ktm 85 Top End Cylinder Kit ), ( Custom Detail 4: Ktm 85 Sx Engine Rebuild ), ( Custom Detail 5: Husqvarna Tc 85 Rebuild Kit ), ( Mounting Style: Bolt-on )

Review WISECO Cometic Bpratv Ktm Sx/xc Husqvarna Gas Gasgas Mc Cylinder Top End Rebuild Kit Piston fits SX XC 1985

The Wisesco Cometic BPR-ATV KTM 85 SX/XC Husqvarna TC85 Gas MC85 CW50013 GasGas cylinder top end rebuild kit is a comprehensive solution for those seeking to revitalize their two-stroke engine's performance. Designed specifically for KTM 85 SX/XC, Husqvarna TC85, and GasGas MC85 models, this kit ensures a perfect fit and optimal function.

The heart of this kit is the high-performance Cometic piston. Crafted from a forged alloy, this piston offers superior strength and durability, ensuring it can withstand the rigors of off-road racing or trail riding. The piston's design includes an optimized crown shape that enhances combustion efficiency and power output.

The Wisesco kit also includes a set of high-quality rings. The piston rings are made from a nitrided steel alloy, ensuring a tight seal between the piston and cylinder wall. This results in reduced engine leakage and improved combustion efficiency, leading to increased power and torque.

Moreover, the kit comes with a set of crankshaft seals. These seals are precision-engineered to provide a tight seal between the crankshaft and the engine casing. This reduces oil leakage, preventing potential damage to the engine and the environment.

Additionally, the kit includes a set of cylinder studs and nuts. These components are essential for securing the cylinder to the crankshaft and ensuring proper engine alignment. The studs and nuts are made from high-strength materials, ensuring they can withstand the stresses of high-performance riding.

The Wisesco Cometic BPR-ATV KTM 85 SX/XC Husqvarna TC85 Gas MC85 CW50013 GasGas cylinder top end rebuild kit is an excellent investment for anyone looking to breathe new life into their two-stroke engine. With its high-performance components, this kit delivers increased power, improved combustion efficiency, and enhanced durability, making it an essential addition to any off-road motorcycle enthusiast's toolbox.

WiseCO Cometic BPR ATV KTM 85SX/XC Husqvarna TC85 Gas MC85 CW50013 GasGas Cylinder Top End Rebuild Kit Piston: A Detailed Analysis

Introduction:

The WiseCO Cometic BPR ATV KTM 85SX/XC Husqvarna TC85 Gas MC85 CW50013 GasGas cylinder top end rebuild kit piston is a replacement part designed for various ATV models. In this analysis, we will weigh the pros and cons of purchasing this product to help you make an informed decision.

Pros:

1. Compatibility: This rebuild kit is designed to fit various ATV models, including KTM 85SX/XC, Husqvarna TC85, Gas MC85, and GasGas models.

2. High-quality components: The kit includes a Cometic piston, which is known for its superior quality and durability. Cometic pistons are made from forged aluminum, ensuring strength and long-lasting performance.

3. Includes necessary components: The rebuild kit includes all the necessary components for a top-end rebuild, such as piston rings, wrist pin, and gudges.

4. Easy installation: The kit is designed to make the rebuild process as straightforward as possible.

5. Cost-effective: Purchasing a rebuild kit is generally more cost-effective than buying individual replacement parts.

Cons:

1. Learning curve: If you have never performed a top-end rebuild before, it may require a learning curve to successfully install the kit.

2. Labor costs: If you are not experienced in ATV engine rebuilds, you may need to pay for professional labor to install the kit.

3. Potential for user error: Improper installation of the kit could lead to engine damage or decreased performance.

Conclusion:

The WiseCO Cometic BPR ATV KTM 85SX/XC Husqvarna TC85 Gas MC85 CW50013 GasGas cylinder top end rebuild kit piston is an excellent investment for those who own compatible ATV models and are comfortable with performing a top-end rebuild. The high-quality components and ease of installation make this kit an attractive option for those seeking to save money and extend the life of their engine. However, it is essential to carefully consider the potential learning curve and labor costs before making a purchase.

Recommendation:

If you are confident in your ability to perform a top-end rebuild and have the necessary tools, the WiseCO Cometic BPR ATV KTM 85SX/XC Husqvarna TC85 Gas MC85 CW50013 GasGas cylinder top end rebuild kit piston is an excellent choice. However, if you are unsure about your abilities or lack the necessary tools, it may be more cost-effective to hire a professional to perform the rebuild using the kit. Always ensure that the kit is compatible with your specific ATV model before making a purchase.

Details:

Cometic top end gasket kit with all required base gaskets and head O-rings. Every component is selected to meet the demands of serious riders and racers. BPRATV 47mm stock bore Nasal plated cylinder manufactured to OEM specifications. Sold ONLY for use with EPA-certified, purpose-built, non road vehicles used solely closed course, competition/racing.

Installation may void vehicle manufacturers' warranty and/or be illegal in some locations. Items installed or prepped lubricated/sealed are ineligible. Key: Built to OEM specifications and tested for durability, this top end kit delivers consistent power dependable performance lap after. BPRATV - The Best Parts.

Includes Nasal cylinder, Wiseco forged piston, and Cometic gaskets for KTM/Husky/GasGas 85cc bikes. Husqvarna TC85 KTM 85 SX GasGas MC Cylinder Top End Rebuild Kit Wiseco Piston: Restore power with the BPRATV 47mm. New heavy duty piston wrist pin bearing. If your application requires an OPEN bearing, the seals can easily be removed.

Featuring a BPRATV Nasal-plated stock bore cylinder, Wiseco forged piston, and Cometic top end gasket kit, this package restores factory compression, throttle response, long-term reliability for aggressive riding competition use. The Best Performance. For warranty consideration, parts MUST be sent back for physical inspection. Titanium Fasteners: Failure during use results in replacement only.

The Best Price. Complete piston assembly including rings, wrist pin, and cir clips. BPRATV 47mm Top End Cylinder Kit Wiseco Piston Cometic KTM Husqvarna GasGas 85:: The is a complete, race-ready rebuild solution engineered for KTM, Husqvarna, and 85cc two-stroke model's. Neither warranty covers improper tuning, installation, maintenance, or misuse.

Direct bolt-on replacement no machining required.

part #: cw50013 price

  • $699.98

specifications pistondon:

  • for models: Sx, Xc
  • for makes: Ktm, Husqvarna
  • for years: 1985
  • brand: Wiseco
  • mpn: Cw50013
  • type: Engine Rebuild Kit
  • engine type: 2-stroke
  • items included: Cylinder Barrel, Gasket Set, Piston Rings, Pistons, Wrist Pins, Wrist Pin Bearing / Top End Bearing
  • features: Corrosion-resistant, Durable, Greasable, Sealed, The Best Parts. The Best Performance. The Best Price.
  • oe/oem part number: 0770800021, 0603061001, 47230035020, 47230035025, 47230030000, 47230033000, 47030074000, 0770540020, 47230035040, 47230035050, 47230035075, 47237008000, 47230038000, 47230006100, A41030060000, 47230007110, 47237006000, 07702300251, 50013, 855m04700, C3636, 47230038000, 47230007110 I, C3636fb, B1012, 09-b012-1, 10-054, 10-353, N1006, Wb139, Cw50013, Cw50013k01, Ring Set 1850cs, Wrist Pin S517, Circlip Cw14
  • machine type: Dual Sport Motorcycle, Off-road Motorcycle, Scooter, Street Motorcycle
  • country of origin: United States
  • performance part: Yes
  • vintage part: No
  • california prop 65 warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Reproductive Harm. Www.p65warnings.ca.gov
  • unit type: Unit
  • bpratv: The Best Parts. The Best Performance. The Best Price.
  • color: Multicolor
  • custom detail 1: Ktm 85 Top End Kit
  • custom detail 2: Gasgas 85 Piston Cylinder Kit
  • custom detail 3: Ktm 85 Top End Cylinder Kit
  • custom detail 4: Ktm 85 Sx Engine Rebuild
  • custom detail 5: Husqvarna Tc 85 Rebuild Kit
  • mounting style: Bolt-on

shipping pistondon:

  • cost: $0.00
  • service: USPS Ground Advantage, USPS Priority Mail, UPS Ground
  • transit: 5-10 Days
  • carrier: USPS, UPS
  • type: Calculated
  • class: Standard, Expedited

returns pistondon:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Engine Rebuild Kits Components
  • condition: New

payments pistondon:

  • wallet: Apple-pay
  • other
  • credit card: Discover

offer pistondon:

  • quantity: 4
  • sold: 0
  • options: Ship-to-home
  • started: January 18, 2026
  • availability: In Stock

seller pistondon:

  • city: Upland, California
  • rating: 100.0%
  • # reviews: 32345
for models: sx, xc, for makes: ktm, husqvarna, for years: 1985, type: engine rebuild kit, engine type: 2-stroke, items included: cylinder barrel, gasket set, piston rings, pistons, wrist pins, wrist pin bearing / top end bearing, features: corrosion-resistant, durable, greasable, sealed, the best parts. the best performance. the best price., oe/oem part number: 0770800021, 0603061001, 47230035020, 47230035025, 47230030000, 47230033000, 47030074000, 0770540020, 47230035040, 47230035050, 47230035075, 47237008000, 47230038000, 47230006100, a41030060000, 47230007110, 47237006000, 07702300251, 50013, 855m04700, c3636, 47230038000, 47230007110 i, c3636fb, b1012, 09-b012-1, 10-054, 10-353, n1006, wb139, cw50013, cw50013k01, ring set 1850cs, wrist pin s517, circlip cw14, machine type: dual sport motorcycle, off-road motorcycle, scooter, street motorcycle, country of origin: united states, performance part: yes, vintage part: no, california prop 65 warning: this product contains chemicals known to the state of california to cause cancer and reproductive harm. www.p65warnings.ca.gov, unit type: unit, bpratv: the best parts. the best performance. the best price., custom detail 1: ktm 85 top end kit, custom detail 2: gasgas 85 piston cylinder kit, custom detail 3: ktm 85 top end cylinder kit, custom detail 4: ktm 85 sx engine rebuild, custom detail 5: husqvarna tc 85 rebuild kit, mounting style: bolt-on,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > engine rebuild kits components, color: multicolor, sku: 10042673961055762,

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pistondon logo
5 offers $699.98–$699.98 USD
  • Offer #1: $699.98 price + $0.00 shipping estimate = $699.98* total. TheBPRATV 47mm Top End Cylinder Kit is a complete, race-ready rebuild solution engineered for KTM, Husqvarna, and GasGas 85cc two-stroke models. Direct bolt-on 47mm top end kit for GasGas MC 85 models.FREE SHIPPING
  • Offer #2: $699.98 price + $0.00 shipping estimate = $699.98* total. Race-ready 47mm top end cylinder kit engineered for durability and OEM fit on KTM Husqvarna GasGas 85.FREE SHIPPING
  • Offer #3: $699.98 price + $0.00 shipping estimate = $699.98* total. BPRATV: Over 20 Years of Excellence in Parts & Service. The Best Performance.FREE SHIPPING
  • Offer #4: $148.97 price + $0.00 shipping estimate = $148.97* total. Husqvarna TC 85 - Years 2014 2015 2016 2017. KTM SX 85 - Years 2013 2014 2015 2016 2017.FREE SHIPPING
  • Offer #5: $699.98 price + $0.00 shipping estimate = $699.98* total. GasGas MC 85 19/16 (2021 2025). GasGas MC 85 17/14 (2022 2025).FREE SHIPPING

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