Akrapovic exhaust Honda CRF450R S-H4E1-FDHLT⟲ 360° — drag me
2.9 k g
02 · Data & docs

The facts.

Technical data
BrandAkrapovic
Part numberS-H4E1-FDHLT
FitmentHonda CRF450R and CRF450RX (2025–2026)
LineEvolution Line (Titanium) — the flagship system
MaterialsPremium titanium alloys, wall thickness varied by section
Weight2.9 kg fitted against 3.9 kg standard — a quarter less
PowerRises to 56.5 PS from 54.5, read off at 10,300 rpm
TorqueReaches 46.3 Nm, two thirds of a newton metre above standard
Noise insertSupplied, removable
Road approvalNone — closed course competition use only
DescriptionThe whole story▼

The most expensive single article in this catalogue, and it goes on a motorcycle with no lights and no number plate. That is the shape of the motocross market: a works-specification exhaust for a works-specification bike, sold to people who race.

Key Features

  • Peak output climbs to 56.5 PS, two above the standard 54.5
  • A kilogram lighter than Honda's own system, 2.9 against 3.9
  • Premium titanium alloys with the wall thickness stepped by section
  • Tailor-made for the very limited space inside the 2025 frame
  • Built for the rigours of off-road racing
  • Removable noise insert supplied
  • Closed course competition use only

The 2025 CRF450R Is a New Motorcycle

Honda redesigned the bike for 2025 with a revised frame, new bodywork and a changed exhaust route. Nothing from the 2021 to 2024 generation carries over, and a system for the older machine will not go on this one.

Check the year in the papers before ordering. From ten metres away the two generations are hard to tell apart.

Where the Money Goes

Not into horsepower. Two PS on a 54 PS engine is worth having on a start straight and nowhere else, and Akrapovic does not pretend otherwise.

What the price buys is a system that survives a season: titanium thick where the bike takes roost and stone strikes, thin where it only carries gas, and shaped to fit a frame that leaves almost no room. A cheaper system uses one wall thickness and compromises in both directions.

Torque at Eight Thousand

The 1.5 Nm arrives at 7,900 rpm — the middle of a 450's working range, where a rider drives out of a rutted corner. On a motocross engine that is a more useful place to find torque than nearer the limiter.

An Insert in the Box

A removable noise insert ships with the system. FIM-regulated meetings enforce a sound limit at the start line, and an exhaust that fails scrutineering is a wasted entry fee.

Keep it in the toolbox with the spare levers rather than in a drawer at home.

What Akrapovic Does Not Claim

No approval of any kind is recorded for this part — not even the competition codes that appear on the older CRF systems. The description says closed course only, and that is the whole of it.

On a bike Honda sells without lights, that is not a limitation anyone will notice.

The Muffler Is as Large as the Frame Allows

Akrapovic sizes competition mufflers to the maximum the chassis will accept, because volume is what silences sound without restricting flow. Packing absorbs noise and burns out; a larger chamber does the same job and lasts.

On a bike as tightly packaged as the 2025 CRF450R, finding that volume is most of the engineering.

Fitment and Compatibility

S-H4E1-FDHLT covers the Honda CRF450R and CRF450RX for model years 2025 and 2026. Installation is quoted at 60 minutes.

Road Approval

None. For closed course competition use only. Not intended for street use.

Specifications

  • Part number: S-H4E1-FDHLT
  • EAN: 3831126441197
  • Bikes covered: Honda CRF450R and CRF450RX, model years 2025 and 2026
  • Line: Evolution Line (Titanium), complete system
  • Made of: premium titanium alloys, stepped wall thickness
  • Weight: 2.9 kg fitted, 3.9 kg standard — one kilogram saved
  • Power: up to 56.5 PS from 54.5 standard, read at 10,300 rpm
  • Torque: up to 46.3 Nm from 45.9 standard, read at 7,900 rpm
  • Insert: supplied, removable
  • Workshop time: about an hour
  • Approval: none; closed circuits only
  • Country of manufacture: Slovenia
DownloadsInstructions▼
FitmentWhich bikes this fits▼
  • Honda CRF450R and CRF450RX (2025–2026)
07 · Support

Questions, one topic at a time.

Estimate your shipping

Get the real shipping cost for this item to your address — the same rates as checkout.

Pick your countrySame rates as checkout

Choose a destination and hit Estimate — we fetch the live rates for this item.

How long does delivery take?

We’re based in Germany. Standard delivery goes by DHL and national postal services and takes about 2–5 days within Germany, 1–2 weeks within the EU and 2–6 weeks outside the EU. Need it sooner? Express delivery reaches most of the world within a few days — just choose it at checkout where available.

How much does shipping cost?

Your exact shipping cost is calculated by destination and weight and shown at checkout before you pay — no hidden fees. Express delivery is selectable at checkout where available.

Do you ship to my country?

Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.

Will I have to pay customs or import duties?

Within the EU, no — our prices already include all duties and EU VAT. For deliveries outside the EU (e.g. Switzerland, the UK or the USA), your order may be subject to import duties and taxes set by your country. These are collected by the carrier when your parcel arrives, aren’t included in our prices, and are outside our control.

How can I track my order?

As soon as your parcel ships we email you a tracking link, so you can follow it all the way to your door.

What if an item is out of stock?

On out-of-stock items you can request a delivery time or leave your email to be notified the moment it returns — just use the notification box on the product.

Didn’t find your answer?

Our team will personally help you choose the right gear or part — around 24h for a reply.

08 · Paddock

Before you go.

Trending in the paddockHover pauses
A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00A.Marquez73 V3 TC-2 Ale...€949,00Márquez Motegi5 TC-6€949,00Toprak Razgatlıoğlu Rep...€949,00Valion TC-1 Red / Grey€899,00
Join the paddock — drops & deals, no noise.