DEP
DEP Expansion Chamber Nickel Finish - Yamaha YZ125 YZ125X
| In Store |
Not in Store
|
| NZ Warehouse |
Out of Stock
|
DESCRIPTION
The DEP Nickel Finish Expansion Chamber is a performance two-stroke exhaust pipe designed specifically for the Yamaha YZ125 and YZ125X. Handmade in the UK by DEP's experienced engineers, each two-stroke exhaust system is dyno and track tested to deliver performance gains over the standard OEM exhaust system.
Finished with a durable nickel-plated coating, this expansion chamber combines DEP's performance-focused design with a consistent shine that's easier to maintain than a traditional bare steel pipe. It is designed to work with both OEM and DEP silencers, making it suitable as a performance upgrade while retaining your existing compatible silencer.
Key Features
~ Performance expansion chamber for Yamaha YZ125 and YZ125X
~ Designed to provide performance gains over the OEM exhaust system
~ Dyno and track tested by DEP
~ Handmade in-house in the UK
~ Manufactured by DEP's experienced exhaust engineers
~ Durable nickel-plated finish
~ Nickel coating provides a consistent shine and easier maintenance
~ CNC-machined exhaust stub
~ Designed to use OEM O-ring rubbers
~ Durable 2mm mild steel laser-cut mounting brackets
~ Mounting brackets designed to match OEM fixing points
~ Compatible with OEM and DEP silencers
~ Designed specifically for the listed Yamaha models and years
Performance
DEP has over 35 years of experience developing performance motorcycle exhaust systems. Its two-stroke pipes are developed using both dyno and real-world track testing to optimise performance compared with the standard OEM exhaust system.
The expansion chamber is designed as a direct performance upgrade for compatible YZ125 and YZ125X models without requiring a DEP silencer to be fitted at the same time.
Nickel Finish
The nickel-plated exterior provides a durable protective finish while maintaining the classic appearance of a performance two-stroke expansion chamber.
~ Durable nickel-plated coating
~ Consistent polished appearance
~ Easier to maintain than an untreated steel finish
~ Classic factory performance look
Fitment
Yamaha
~ YZ125: 2022-2027
~ YZ125X: 2023-2027
Installation Notes
~ Compatible with OEM and DEP silencers
~ Initially fit the expansion chamber loosely to its mounting points
~ Fit the silencer before fully tightening the expansion chamber fixings
~ Once correctly aligned, tighten all mounting hardware
~ Some DEP pipes feature intentionally flattened sections to provide clearance around the frame, engine or coolant hoses
Jetting
For a standard, unmodified motorcycle, DEP recommends retaining the standard jetting settings unless otherwise specified.
For modified engines, the fuel mixture should be checked after installation and adjusted where required. DEP recommends checking the spark plug for correct mixture or consulting an experienced engine tuner.
Specifications
~ Brand: DEP
~ Product: Two-Stroke Expansion Chamber
~ Finish: Nickel Plated
~ Application: Yamaha YZ125 / YZ125X
~ Silencer Compatibility: OEM or DEP
~ Exhaust Stub: CNC Machined
~ O-Ring Compatibility: OEM
~ Mounting Brackets: 2mm Mild Steel, Laser Cut
~ Manufacture: Handmade in the UK
~ Development: Dyno & Track Tested
Why Choose a DEP Expansion Chamber?
The DEP Nickel Finish Expansion Chamber for Yamaha YZ125 and YZ125X is designed for riders wanting to upgrade their two-stroke exhaust with a system developed specifically for performance. With dyno and track-tested development, handmade UK construction, OEM-compatible mounting and a durable nickel-plated finish, it's a quality performance upgrade for both motocross and cross-country YZ125 riders.
SHIPPING
SHIPPING
Shipping & Delivery
Here’s what to expect when ordering motorcycle parts, accessories and riding gear from Motozone.
Where your order ships from
Orders may be dispatched from Auckland, Hamilton, Kihikihi, New Plymouth or Christchurch, depending on where your items are available.
Where possible, we’ll ship from the closest location with stock available.
Your order may arrive in more than one parcel if items are dispatched from different warehouses. These parcels may arrive on different days.
New Zealand shipping
Orders over $199 qualify for FREE standard shipping throughout New Zealand, including rural addresses.
For orders of $199 or less:
~ Urban delivery: $9.99
~ Rural delivery: $15.99
Priority Dispatch: $25.99
Keen to get your order out the door sooner? Jump the processing queue with Priority Dispatch.
For $25.99, we’ll prioritise processing your order ahead of standard orders to get it ready for dispatch sooner.
Priority Dispatch is about how quickly we process your order. It is not an express courier service and does not guarantee overnight delivery or a particular arrival date. Once dispatched, normal courier delivery times apply.
Dispatch remains subject to stock availability and the operating hours of the warehouse supplying your items.
Free standard shipping on orders over $199 does not include the optional Priority Dispatch fee.
New Zealand delivery times
Delivery is often overnight after dispatch, but please allow 2–3 working days, depending on the dispatch location and destination.
For rural addresses, please allow a couple of extra working days.
The time and day you place your order, along with stock availability, can affect when it’s dispatched. Delivery estimates are from dispatch, rather than the time you place your order.
Want your order delivered to work? No problem. Enter your workplace name and full delivery address at checkout.
Australia shipping
Orders over $199 qualify for FREE standard shipping to Australia.
For orders of $199 or less:
~ Delivery: $25.99
Please allow approximately 5–10 working days after dispatch for delivery.
All prices and shipping thresholds shown on this page are in New Zealand dollars (NZD).
Need your order by a certain date?
If you’re ordering for a ride, event or trip, contact us before placing your order. We can check stock availability and expected dispatch timing to help you plan.
Delivery times are estimates and may be affected by weekends, public holidays and courier delays.
Missing an item or waiting on a parcel?
If part of your order arrives first, the remaining items may be travelling separately from another warehouse.
If you’re unsure, or your delivery is taking longer than expected, email contact@motozone.co.nz with your order number and we’ll help track it down.
RETURNS
RETURNS
Returns & Exchanges
Wrong size or changed your mind? No worries at all, we’re happy to help arrange an exchange or return.
Eligible goods purchased from Motozone can be returned within 30 days of receipt for a refund or exchange.
Return conditions
For change-of-mind returns and size exchanges, goods must be:
~ New, unused and unaltered
~ Not previously installed
~ In a sellable condition with all original packaging, tags and included accessories
~ Returned with the manufacturer’s original packaging intact, not torn, ripped or otherwise damaged
Please try riding gear on indoors and open packaging carefully. Keep everything until you’re happy with the fit.
Special-order items that turn out to be an incorrect fit are excluded from our change-of-mind returns policy. Unsure about fitment? Contact us before ordering so we can help.
How to get started
Email contact@motozone.co.nz with:
~ Your order or invoice number
~ The item(s) you’d like to return
~ The reason for returning them
~ Whether you’d prefer an exchange or refund
~ The replacement size or style you’d like, if exchanging
We’ll email you the correct form and instructions for sending your items back to Motozone Kihikihi.
Option 1: Exchange
Send your item(s) back with the completed Exchange Form, letting us know the size or style you’d like instead.
Once we receive them and check they meet the return conditions, we’ll send out your replacement freight free you just cover the cost of getting the original item(s) back to us.
Exchanges are subject to availability. If there’s a price difference, we’ll arrange this with you before sending your replacement.
Option 2: Return for a refund
Send your item(s) back with the completed Returns Form.
Once they arrive and we’ve checked they meet the return conditions, we’ll process your refund. Please allow additional time for your payment provider to make the funds available.
For change-of-mind returns, original freight charges are non-refundable, and you cover the cost of return shipping.
Want it faster?
If you’re keen to get your replacement sooner, place a new order on our website, then send the original item(s) back with the completed Returns Form.
Once your return arrives and meets the return conditions, we’ll refund the returned item(s) from your original order. Your new order is separate and normal shipping charges apply.
Sending your parcel
Pack your items securely inside a separate outer bag or box to protect the goods and the manufacturer’s original packaging.
Please don’t attach courier labels or tape directly to the manufacturer’s packaging, including boot boxes and helmet boxes. For change-of-mind returns and size exchanges, this packaging must arrive intact, without tears, rips or other damage.
Include your completed Exchange Form or Returns Form inside the parcel so we can identify your return and process it promptly.
We recommend using tracked shipping and keeping your tracking details.
You can book your return shipping here:
Book a parcel with NZ Post
Faulty, damaged or incorrect items
If your item arrives damaged, develops a fault or isn’t what you ordered, please contact us with your order number and details of the problem. Include photos where helpful.
We’ll work with you to arrange the appropriate next steps, including any applicable return shipping arrangements.
The change-of-mind conditions above: including the 30-day limit, unused condition, original packaging requirements and freight exclusions: do not limit your rights under the Consumer Guarantees Act 1993.
Need a hand? Email contact@motozone.co.nz and we’ll help you get it sorted.