Skip to content

My Garage

Your recent bike searches

Search for a bike and it will appear here.

Search another bike

Saved in this browser. Browse any bike, anytime.

Shop all parts

Images are for reference. Confirm the selected option.See product details

Product information

Details & specifications

SDI DU Piston Bushing Conversion Kit

SDI DU Piston Bushing Conversion Kit by SDI is a replacement parts listing built for riders searching by exact product name, fitment, style, and part number.

Key Features

  • Replaces stock wear band; standard piston rings often wear dramatically in the first five hours changing low-speed damping
  • Designed to lower friction and create consistent damping for the life of your oil

Part Numbers

0450-0618, DRPBK-WP36, 0450-0616, DRPBK-SH40, 0450-0623, DRPBK-KYB40, 0450-0614, DRPBK-KYB46, 0450-0619, DRPBK-WP46XPL, 0450-0615, DRPBK-KYB50, 0450-0617, DRPBK-SH50, 0450-0620, DRPBK-WP50, 0450-0621, DRPBK-WP5016, 0450-0622, DRPBK-WP50PDS, 0450-0664, DRPBK-WP5023

Available Styles

36 mm; 40 mm; 46 mm; 50 mm

Available options: 11

Check your bike

Bike compatibility

Match the year, make, model and any additional restrictions. If you're unsure, confirm with us before ordering.

Check with our team ↗

  • 2006 Kawasaki KX250F
  • 2007 Kawasaki KX250F
  • 2008 Kawasaki KX250F
  • 2009 Kawasaki KX250F
  • 2010 Kawasaki KX250F
  • 2011 Kawasaki KX250F
  • 2012 Kawasaki KX250F
  • 2013 Kawasaki KX250F
  • 2014 Kawasaki KX250F
  • 2015 Kawasaki KX250F
  • 2016 Kawasaki KX250F
  • 2017 Kawasaki KX250F
  • 2018 Kawasaki KX250F
  • 2019 Kawasaki KX250F
  • 2004 Suzuki RM250
  • 2005 Suzuki RM250
  • 2006 Suzuki RM250
  • 2007 Suzuki RM250
  • 2008 Suzuki RM250
  • 2000 Honda CR250R
  • 2001 Honda CR250R
  • 2002 Honda CR250R
  • 2003 Honda CR250R
  • 2004 Honda CR250R
  • 2005 Honda CR250R
  • 2006 Honda CR250R
  • 2007 Honda CR250R
  • 2001 Suzuki RM125
  • 2002 Suzuki RM125
  • 2003 Suzuki RM125
  • 2004 Suzuki RM125
  • 2005 Suzuki RM125
  • 2006 Suzuki RM125
  • 2007 Suzuki RM125
  • 2015 Kawasaki KX450F
  • 2016 Kawasaki KX450F
  • 2017 Kawasaki KX450F
  • 2018 Kawasaki KX450F
  • 2019 Kawasaki KX450F
  • 2020 Kawasaki KX450F
  • 2021 Kawasaki KX450F
  • 2004 Honda CRF250R
  • 2005 Honda CRF250R
  • 2006 Honda CRF250R
  • 2007 Honda CRF250R
  • 2008 Honda CRF250R
  • 2009 Honda CRF250R
  • 2010 Honda CRF250R
  • 2011 Honda CRF250R
  • 2012 Honda CRF250R

Before you order

Shipping & returns

Shipping rates & timing

Eligible standard U.S. orders ship free at $100+. Below $50: $19.95; $50–$99.99: $12.95. Standard transit is usually 3–5 business days after shipment. Processing and special-order timing vary. Checkout confirms the rate. Alaska, Hawaii and Puerto Rico are excluded.

Read shipping policy ↗

30-day return requests.

Eligible items must be unused, uninstalled and in their original condition and packaging. Request approval within 30 days of delivery. Ordinary return shipping is your responsibility; exclusions apply.

Read return policy ↗

Secure Shopify checkout.

Complete your order through Shopify. Available payment methods and any installment eligibility are shown at checkout.

Ach Direct DebitAmazon American Express Apple Pay Diners ClubDiscoverGoogle Pay Mastercard PayPalShop Pay USDC Visa

Good to know

Common questions

A few answers before you place your order.

How do I know I'm choosing the right fit?

Check the listed year, make, model and any trim restrictions. Product-level fitment information may cover several variants. If your exact bike isn't listed, ask us before ordering. Check compatibility details.

Does it include everything shown in the photos?

Use the product description and included-items list to confirm the contents. Reference photos may show optional accessories or another finish. If contents or quantities aren't specified, ask us before purchasing. See product details

When will my order arrive?

Availability is not a delivery-date guarantee. Orders may ship from Parts4Motorcycles, a distributor or the manufacturer. Standard U.S. transit is usually 3–5 business days after shipment; processing and special-order lead times are additional. Contact us if you need the item by a specific date. Email our team

Can I exchange it if I choose the wrong option?

We don't offer direct exchanges. For eligible unused items, request a return within 30 days of delivery, then place a new order for the correct option. Return approval and the policy exclusions apply. Read return policy

Added to your cart

SDI DU Piston Bushing Conversion Kit
SDI DU Piston Bushing Conversion Kit

50 mm 04500617

Qty: 1$19.95 each

Ready to check out, or want to keep shopping?

Review your cart ↗