• Shipping on: Mon, Wed & Fri
  • Designed & Tested by Racers
  • Pay in 3 installments
18
18
Added to wishlist
SKU INL-WJ-MF-38MM Categories ,
SKU INL-WJ-MF-38MM Categories ,

WJ Mass Flow Keihin 38MM

€34.95

  • Shipping on: Mon, Wed & Fri
  • Free shipping from €200
  • Pay Within 3 Periods

Product Colors:
Black

Includes:

  • 1x Chalice

Fits:

  • Keihin 38mm

About This Product:
The Chalice is one of WJ's unique products, designed to manipulate airflow for improved performance. By creating high airspeed through the upper section of the chalice, additional air is drawn in from the sides, which can increase overall engine power. This innovative design optimizes air intake, making it ideal for performance-focused setups.

Added to wishlist

Product description

Specifications

Brand:

N/A

Model:

N/A

Engine Type:

N/A

SKU:

INL-WJ-MF-38MM

Customers also viewed

CNC Mudguard Bracket – Brace - Gilera Runner Maxi

Add

€43.95 – €49.95

Socket Set / Ratchet Set – TOPTUL 1/4″ – 4–14 mm – 41-Piece

Add

€41.95

Oversized Variator – BGM – Piaggio 125/180cc

Add

€219.95

Quick links
Categories
Questions about orders or products? Send us a message
Want to stay up to date with the latest news? Subscribe to our newsletter

Terms and conditions

Privacy policy

© 2026 UDefine All Rights Reserved

  • Item added to cart
Your shopping cart
Malossi Piston – 65 mm – AC/LC – Size C – 172 cc
Malossi Piston – 65 mm – AC/LC – Size C – 172 cc
Price: €106.95
- +
€106.95
Threadlocker – Loctite 243 – Medium Strength – 10 ml
Threadlocker – Loctite 243 – Medium Strength – 10 ml
Price: €23.95
- +
€23.95
Keihin 28MM Carburetor
Keihin 28MM Carburetor
Price: €280.00
- +
€280.00
Socket Set / Ratchet Set – TOPTUL 1/4" – 4–14 mm – 41-Piece
Socket Set / Ratchet Set – TOPTUL 1/4" – 4–14 mm – 41-Piece
Price: €41.95
- +
€41.95
O-Ring Picker 
O-Ring Picker 
Price: €11.95
- +
€11.95
1-on-1 Tuning Session – With WJ
1-on-1 Tuning Session – With WJ
Price: €699.95
- +
€699.95
Toronda Cylinder Head – 52mm Bore – Piaggio 125/180cc LC
Toronda Cylinder Head – 52mm Bore – Piaggio 125/180cc LC
Price: €109.95
- +
€109.95
Vent Nipple – Piaggio Maxi
Vent Nipple – Piaggio Maxi
Price: €3.99
- +
€3.99
Main Jet Set – KMT – Keihin PWK / Polini CP – 200-238
Main Jet Set – KMT – Keihin PWK / Polini CP – 200-238
Price: €39.95
- +
€39.95
CR85 Reed Valve Gasket
CR85 Reed Valve Gasket
Price: €9.95
- +
€9.95
Spark Plug – NGK BR9EG
Spark Plug – NGK BR9EG
Price: €9.97
- +
€9.97
Revision Kit Water Pump - RMS - Piaggio 125-180cc 2-Stroke
Revision Kit Water Pump - RMS - Piaggio 125-180cc 2-Stroke
Price: €15.95
- +
€15.95
Crankshaft Bearing Set - BGM PRO - Piaggio / Gilera Maxi 2-Stroke 125-180cc
Crankshaft Bearing Set - BGM PRO - Piaggio / Gilera Maxi 2-Stroke 125-180cc
Price: €52.95
- +
€52.95
Fan Switch – Gilera Runner 125/180cc 2-Stroke
Fan Switch – Gilera Runner 125/180cc 2-Stroke
Price: €24.95
- +
€24.95
Crankcase Bolt Set – 16 Pieces M6x35MM – Piaggio 125/180cc
Crankcase Bolt Set – 16 Pieces M6x35MM – Piaggio 125/180cc
Price: €14.95
- +
€14.95
Ignition Cover RC/C-One Blank Custom Logo
Ignition Cover RC/C-One Blank Custom Logo
Price: €88.95
- +
€88.95
Connecting Rod - Small-End Bearing - Malossi 125/180cc
Connecting Rod - Small-End Bearing - Malossi 125/180cc
Price: €15.90
- +
€15.90
Grille Side Panel Gilera Runner Left/Right
Grille Side Panel Gilera Runner Left/Right
Price: €22.95
- +
€22.95
Sub total €1,575.16
Shipping Free!
Tax €273.37
Total €1,575.16
Proceed to the checkout page to view your shipping costs
Continue shoppingCheckout€1,575.16
    Calculate Shipping
    The shipping options will be updated at checkout.
      Related products
      Related products

      WJ Mass Flow Keihin 38MM

      has been added to your cart

      Cart

      All your chosen products

      Remove item Thumbnail image Product Price Quantity Subtotal
      × Malossi Piston – 65 mm – AC/LC – Size C – 172 cc Malossi Piston – 65 mm – AC/LC – Size C – 172 cc €106.95
      		€106.95
      × Threadlocker – Loctite 243 – Medium Strength – 10 ml Threadlocker – Loctite 243 – Medium Strength – 10 ml €23.95
      		€23.95
      × Keihin 28MM Carburetor Keihin 28MM Carburetor €280.00
      		€280.00
      × Socket Set / Ratchet Set – TOPTUL 1/4" – 4–14 mm – 41-Piece Socket Set / Ratchet Set – TOPTUL 1/4" – 4–14 mm – 41-Piece €41.95
      		€41.95
      × O-Ring Picker  O-Ring Picker  €11.95
      		€11.95
      × 1-on-1 Tuning Session – With WJ 1-on-1 Tuning Session – With WJ €699.95
      		€699.95
      × Toronda Cylinder Head – 52mm Bore – Piaggio 125/180cc LC Toronda Cylinder Head – 52mm Bore – Piaggio 125/180cc LC €109.95
      		€109.95
      × Vent Nipple – Piaggio Maxi Vent Nipple – Piaggio Maxi €3.99
      		€3.99
      × Main Jet Set – KMT – Keihin PWK / Polini CP – 200-238 Main Jet Set – KMT – Keihin PWK / Polini CP – 200-238 €39.95
      		€39.95
      × CR85 Reed Valve Gasket CR85 Reed Valve Gasket €9.95
      		€9.95
      × Spark Plug – NGK BR9EG Spark Plug – NGK BR9EG €9.97
      		€9.97
      × Revision Kit Water Pump - RMS - Piaggio 125-180cc 2-Stroke Revision Kit Water Pump - RMS - Piaggio 125-180cc 2-Stroke €15.95
      		€15.95
      × Crankshaft Bearing Set - BGM PRO - Piaggio / Gilera Maxi 2-Stroke 125-180cc Crankshaft Bearing Set - BGM PRO - Piaggio / Gilera Maxi 2-Stroke 125-180cc €52.95
      		€52.95
      × Fan Switch – Gilera Runner 125/180cc 2-Stroke Fan Switch – Gilera Runner 125/180cc 2-Stroke €24.95
      		€24.95
      × Crankcase Bolt Set – 16 Pieces M6x35MM – Piaggio 125/180cc Crankcase Bolt Set – 16 Pieces M6x35MM – Piaggio 125/180cc €14.95
      		€14.95
      × Ignition Cover RC/C-One Blank Custom Logo Ignition Cover RC/C-One Blank Custom Logo €88.95
      		€88.95
      × Connecting Rod - Small-End Bearing - Malossi 125/180cc Connecting Rod - Small-End Bearing - Malossi 125/180cc €15.90
      		€15.90
      × Grille Side Panel Gilera Runner Left/Right Grille Side Panel Gilera Runner Left/Right €22.95
      		€22.95

      Subtotal €1,575.16
      Shipping

      The shipping options will be updated at checkout.

      Total €1,575.16 (including €273.37 VAT)
      Continue to checkout