High compression head insert for Trrs from 2026 to current by S3Parts.
Head insert designed to achieve a more aggressive response, for use at very high altitude, or to adapt the bike for high-level riders looking for a stronger and more aggressive response.
Assembly:
- Designed to be fitted with the original cylinder head cover
Compatible spark plug:
- Requires a long-thread spark plug
- Compatible with:
BPR5ES (not included)
BPR5EIX Iridium (not included)
Material and application:
- Part developed by S3 Parts
- High compression configuration
Why choose this product?
Specific compatibility with recent TRRS models
Designed to be fitted with the original cylinder head cover
Compatible with carburetor, fuel injection and electric start
Allows the use of long-thread spark plugs
S3 Parts quality and specialization
Personalized advice from Trial experts:
If you have any questions, write to us on WhatsApp or by email before buying and we will inform you.
If it’s not for you, we’ll tell you.
If you can’t find the part you’re looking for, write to us.
Available at Non Stop Bikes with fast shipping.
Compatible with Trrs models:
Carburetor, fuel injection and electric start models:
GOLD 250 or 300 from 2025 to current
ONE RR 300 from 2026 to current
