Sidi Crossfire 3 SRS Motorcycle Boots Violet/Black/Fluo Yellow 366 – Motocross Boot
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The Sidi Crossfire 3 SRS motorcycle boots in violet/black/fluo yellow are crafted for champions. Driven by adrenaline and competition, the Crossfire 3 SRS is one of the most successful boots in motocross, preferred by the best riders on the international scene. It delivers all the safety and support extreme riding demands in an incredibly flexible structure that allows a full range of movement — and thanks to SRS sole technology, the sole can be replaced in a blink with just a screwdriver.
Key Features
- SRS (Sole Replacement System) lets you swap the sole in seconds with a screwdriver, keeping grip always at its best
- MXGP- and SX-engineered microfibre with integrated impact protectors covering the entire boot
- Engineered dual anti-hyperextension system prevents dangerous movement while allowing complete freedom to move
- Micro-adjustable, replaceable buckle system with 4 adjustable straps and an adjustable calf system for a tailored fit
- Dual Flex System upper with hyperextension block for support through the full range of motion
- Replaceable shin plate, metatarsus insets and anatomic heel cup for lasting protection
Unleash Your Full Potential
The Crossfire 3 SRS is designed to unleash a pro rider's full potential, fully adaptable to your physique. Four adjustable straps, the adjustable calf system and the flex system that allows a wide range of movement make it easy to find your perfect fit — so the boot works with your body, not against it.
All Movement, in Safety
Sidi introduced the concept of hyperextension control to the motocross boot, and has since mastered the art of preventing dangerous ranges of movement while allowing complete freedom to ride at your best. The engineered dual anti-hyperextension system supports the leg through every jump, rut and landing.
SRS Sole Technology
Engineered to keep sole grip always at its best, the SRS system means the sole can be replaced in a blink with just a screwdriver — no need to retire the boot when the sole wears. It is a race-bred detail that keeps the Crossfire 3 SRS performing season after season.
Fit and Sizing
The Sidi Crossfire 3 SRS is offered in a regular fit across EU sizes 40–47. If you ride in thicker socks or sit between sizes, we recommend sizing up. Consult the Sidi size chart before ordering to confirm the best fit.
Specifications
| Brand | Sidi |
| Model | Crossfire 3 SRS |
| Model number | 366 |
| Colour | Violet/Black/Fluo Yellow |
| Type | Motocross boot |
| Upper material | MXGP/SX-engineered microfibre |
| Protection | Integrated impact protectors (full boot); replaceable shin plate; anatomic heel cup; replaceable metatarsus insets |
| Closure system | Micro-adjustable replaceable buckles; 4 straps; adjustable calf system |
| Anti-hyperextension | Engineered dual anti-hyperextension + Dual Flex System |
| Sole | SRS replaceable sole (screwdriver swap) |
| Fit | Regular |
| Intended use | Motocross & off-road competition |
| Available sizes | 40–47 |
| Brand | Sidi |
|---|---|
| Model | Crossfire 3 SRS |
| Model number | 366 |
| Colour | Violet/Black/Fluo Yellow |
| Upper material | MXGP/SX-engineered microfibre |
| Protection | Integrated impact protectors (full boot); replaceable shin plate; anatomic heel cup; replaceable metatarsus insets |
| Closure system | Micro-adjustable replaceable buckles; 4 straps; adjustable calf system |
| Anti-hyperextension | Engineered dual anti-hyperextension + Dual Flex System |
| Sole | SRS replaceable sole (screwdriver swap) |
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// Sidi
Sidi Crossfire 3 SRS Motorcycle Boots Violet/Black/Fluo Yellow 366 – Motocross Boot

Tech specs
- Brand
- Sidi
- Model
- Crossfire 3 SRS
- Model number
- 366
- Colour
- Violet/Black/Fluo Yellow
- Upper material
- MXGP/SX-engineered microfibre
- Protection
- Integrated impact protectors (full boot); replaceable shin plate; anatomic heel cup; replaceable metatarsus insets
- Closure system
- Micro-adjustable replaceable buckles; 4 straps; adjustable calf system
- Anti-hyperextension
- Engineered dual anti-hyperextension + Dual Flex System
- Sole
- SRS replaceable sole (screwdriver swap)
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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