2Bros Parts

PISTON KIT 87-93 KTM125, WOSSNER 8011DB FORGED MX

$128.07Only 1 left

4.1 Trustpilot 99.9% positive on eBay

Delivery to United States 5–8 business days

Spread the cost with Klarna

1

Wossner forged piston kit 8011DB is a 54.20mm (+0.01 oversize) piston designed for 125cc two-stroke models. This piston is engineered for high performance and durability, offering optimised heat transfer from the combustion chamber to the cylinder walls. The elliptical design ensures uniform bearing surface distribution under thermal expansion, reducing the risk of piston collapse and improving overall engine efficiency. Features include a forged piston design for increased strength and durability, optimised heat transfer, and an elliptical shape for uniform load distribution and prevention of localised stress. Manufactured in Germany. Specifications: 125cm³, bore size 54.20mm (+0.01 oversize), stroke 54.10mm, piston-to-wall clearance 0.06mm, compression height 28.00mm, compression ratio 2-stroke (Wossner and OEM). Cross-reference OEM part numbers: Wossner Piston 8011DB, Lock CW15, Pin WP032, Ring Set RSB5425 x 2. Internal Reference Part No. 56-W627.00B.WO. Weight 180g.

Specifications
SKU
56-W627.00B.WO
Brand
Wossner
Availability
In Stock (1)

Fitments (21)

MakeModelYear
KTM125 GS1987
KTM125 GS1988
KTM125 GS1989
KTM125 GS1990
KTM125 GS1991
KTM125 GS1992
KTM125 GS1993
KTM125 MX1987
KTM125 MX1988
KTM125 MX1989
KTM125 MX1990
KTM125 MX1991
KTM125 MX1992
KTM125 MX1993
KTM125 SX1987
KTM125 SX1988
KTM125 SX1989
KTM125 SX1990
KTM125 SX1991
KTM125 SX1992
KTM125 SX1993
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
54.20mm
Variant Id
257149
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit 54.20mm (+0.01) for KTM 125cc

This Wossner forged piston kit, model 8011DB, is precision-engineered for high-performance KTM 125cc two-stroke engines manufactured between 1987 and 1993. Constructed using a forged design, this piston offers superior strength and durability for demanding riding conditions. Its advanced elliptical shape ensures uniform bearing surface distribution, even under thermal expansion, which helps prevent piston collapse and enhances overall engine efficiency by optimizing heat transfer from the combustion chamber to the cylinder walls. Manufactured in Germany, this kit adheres to stringent quality standards for reliable performance.

Key Features:

  • Forged piston design for increased strength and longevity.
  • Engineered for optimized heat transfer from the combustion chamber to cylinder walls.
  • Elliptical shape promotes uniform load distribution and prevents localized stress.
  • High-quality manufacturing standards from Germany.

Specifications:

  • Engine Displacement: 125 cm³
  • Bore Size: 54.20mm (+0.01 oversize)
  • Stroke: 54.10mm
  • Piston-to-Wall Clearance: 0.06mm
  • Compression Height: 28.00mm
  • Compression Ratio: Compatible with 2-stroke (Wossner and OEM)

Included Components:

  • Wossner Piston: 8011DB
  • Lock: CW15
  • Pin: WP032
  • Ring Set: RSB5425 (quantity 2)
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

Trade pricing available

Buying parts for your business? Apply for a 2BrosParts trade account.

Apply for Trade
1