The facts.
| Part number | G00SI38T |
|---|---|
| Type | Silencer |
| Silencer design | Force |
| Material | Titanium |
| Dimensions | Ø 60 mm, 400 mm long |
| Fitment | Yamaha R1 / R1M (2015-2025) |
| Road approval | None — track use only |
| Origin | Made in Italy |
DescriptionThe whole story▼
The one that comes with the plug. Spark's 400 mm titanium Force silencer group for the D.60 STEP2 system, supplied with its dB killer — the only silencer group in the R1 range that includes one rather than offering it as an option.
Key Features
- Force silencer group, titanium, 400 mm, for the Yamaha R1 and R1M.
- dB killer included in the box.
- For Spark's D.60 STEP2 manifold in stainless or titanium.
- Within the 102 dB limit of the French championship and the Endurance World Championship without the insert fitted.
- Cylindrical case with a straightforward mounting interface.
- Sold as a group — silencer with its mounting parts.
Two Sound Levels From One Silencer
The Force clears 102 dB with nothing in it, which covers the French championship and the Endurance World Championship. With the dB killer fitted it goes lower again.
That second number is what this package is for. Some circuits, particularly those near housing, set limits below what any championship demands, and some countries impose a national ceiling on track days that has nothing to do with racing at all. A removable insert is the only practical way to have one exhaust that satisfies both a race weekend and a Tuesday evening test session.
The Honest Case for a dB Killer
A baffle is a restriction, and a restriction costs flow. There is no version of this where the plug is free — that is why Spark's stated aim for the range is to meet the limits without one, and why the plain groups ship empty.
Where it earns its place is as insurance. Being turned away at scrutineering costs the whole day; two decibels of headroom in a pocket costs nothing until you need it. Fit it for the sighting laps, take it out when you know the circuit's number, and you have made the decision with information rather than in advance.
Fitment & Compatibility
Yamaha R1 and R1M, 2015 through 2025, on Spark's D.60 manifolds GYA8878 in stainless or GYA8858 in titanium. Complete as kits these are GYA8878T and GYA8882T. The Force Evo group for the same diameter, without an insert, is G00SI41T.
Road Approval
None, dB killer or not. The insert changes the sound level, not the certification, and the D.60 manifold removes the catalytic converter. Closed circuits only.
Specifications
- Part number: G00SI38T
- Type: Silencer group for 3/4 system
- Design: Force
- Material: Titanium
- Length: 400 mm
- Manifold diameter: 60 mm (STEP2)
- dB killer: included
- Noise: within the 102 dB French championship and EWC limit without the insert
- Fitment: Yamaha R1 / R1M (2015-2025)
- Road approval: None — track use only
- Manufacturer: Spark Exhaust Technology, Mantova, Italy
FitmentWhich bikes this fits▼
- Yamaha R1
- Yamaha R1M
Questions, one topic at a time.
Get the real shipping cost for this item to your address — the same rates as checkout.
Choose a destination and hit Estimate — we fetch the live rates for this item.
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.
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.
Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.
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.
As soon as your parcel ships we email you a tracking link, so you can follow it all the way to your door.
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.
You have the right to cancel within 14 days of receiving your order. Register your return by email first; once it’s approved you have a further 14 days to send the goods back. Items should be unused and in their original packaging.
Register your return by email with your order number before sending anything back, and we’ll send you the return instructions. Please note: returns that aren’t registered in advance can’t be accepted.
The quickest way is to place a new order for the size you need and register a return for the original by email — just let us know it’s an exchange.
We’re sorry — that shouldn’t happen. Contact us with your order number and a photo as soon as you can, and we’ll arrange a replacement or refund right away. Faulty goods are always covered by your statutory warranty.
Refunds go back to your original payment method, usually within 3–5 working days of your return reaching our warehouse.
PayPal, all major credit and debit cards (Visa, Mastercard, American Express), Klarna (pay later and instalments), Apple Pay, Google Pay and more — all processed securely via PayPal and Mollie.
Yes. Choose Klarna at checkout to split your purchase into flexible monthly installments.
Your payment is taken when you place your order. If you choose Klarna, you pay later according to Klarna’s terms.
Every payment runs over an SSL-encrypted connection through certified providers. We never see or store your full card details.
If your order hasn’t shipped yet, contact us as soon as possible and we’ll do our best to change or cancel it.
No — you can check out as a guest. An account simply lets you track orders and reorder faster.
For customers in the EU, prices are shown including your country’s local VAT. For customers outside the EU, prices are shown without VAT — instead, your country’s import taxes and duties may apply on delivery (see the customs question).
Yes. Your invoice is attached to your order confirmation email and is also available in your account.
Yes. We’re an authorised dealer, so every product is 100% original and comes with the full manufacturer warranty.
Yes. Everything we sell is genuine and comes with the manufacturer’s warranty, on top of your statutory rights. Keep your invoice as proof of purchase and contact us if you ever need to make a claim — we’ll help you through it.
Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.