Go Fast Bits SV52 Blow off Valve / Diverter Valve - Universal Weld On.

The Go Fast Bits (GFB) SV52 Blow Off Valve is the ultimate solution for high-powered turbocharged and supercharged engines, delivering unmatched flow capacity, strength, and compact design. Standing only 86mm tall (including the weld-on adaptor), the SV52 is 10mm shorter than its nearest competitor — and it flows more, making it the leader in compact, high-performance BOVs.

Engineered for extreme boost applications, the SV52 is pressure-rated to an incredible 300psi, ensuring reliability in the most demanding builds. Its CNC-machined monobloc aluminium body and 52.5mm anodized piston with Viton seals guarantee long-term durability, smooth operation, and consistent performance under intense cyclic conditions.

Unlike diaphragm-based designs that wear out under repeated pressure reversals, the SV52 uses a piston system, eliminating failure points while providing superior sealing and response. It’s built to last, backed by a lifetime warranty for total peace of mind.

The SV52 also includes 2 springs and an adjustable spring preload system, allowing you to fine-tune for faster throttle response and quicker boost recovery after gearshifts — without the need to buy extra springs. Designed for engines with manifold vacuum ranging from 5–22inHg (17–74.5kPa, 2.5–11psi vacuum), it suits a wide variety of forced-induction setups.

Key Features:

• Compact high-flow blow-off valve — just 86mm tall

• Handles up to 300psi boost pressure

• Outflows all competitors in its class

• CNC-machined monobloc aluminium body for strength and reliability

• 52.5mm anodized piston with Viton o-ring seals for durability

• Piston design (not diaphragm) — immune to pressure reversal failures

• 2 springs + adjustable preload system for easy tuning

• Designed for engines with 5–22inHg vacuum range

• Compact weld-on adaptor mounting saves space in tight bays

• Lifetime warranty for worry-free performance

Built for serious enthusiasts and racers, the GFB SV52 Blow Off Valve delivers the perfect combination of size, flow, strength, and reliability.