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Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V titanium alloy for added valve control above 10,000 rpm. Also includes BC3991 integrated valve seat/seal.

NOTE: Does not work with over .430" lift camshafts. Retainer to seal contact will cause extensive damage to the head.

Type BC1900 Single
Free Length 1.610"
Seat 1.265" @ 83 lbs
Open 0.850" @ 197 lbs
Coil Bind 0.760"
Retainer BC2901S
Valve Seal BC3991
Net Cam Lift 0.430" w/BC3991 Seal

FR SPORT

Brian Crower Polaris XP Turbo (16-up) / XP 1000 (14-up) Beehive Spring/Steel Retainer/Seal Kit w/o Seats BC0900SX

SKU 9B1FO
$414.00
$345.00

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V titanium alloy for added valve control above 10,000 rpm. Also includes BC3991 integrated valve seat/seal.

NOTE: Does not work with over .430" lift camshafts. Retainer to seal contact will cause extensive damage to the head.

Type BC1900 Single
Free Length 1.610"
Seat 1.265" @ 83 lbs
Open 0.850" @ 197 lbs
Coil Bind 0.760"
Retainer BC2901S
Valve Seal BC3991
Net Cam Lift 0.430" w/BC3991 Seal
$414.00
$345.00

Frequently Bought Together

Total price$1,788.99

Product Description

Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V titanium alloy for added valve control above 10,000 rpm. Also includes BC3991 integrated valve seat/seal.

NOTE: Does not work with over .430" lift camshafts. Retainer to seal contact will cause extensive damage to the head.

Type BC1900 Single
Free Length 1.610"
Seat 1.265" @ 83 lbs
Open 0.850" @ 197 lbs
Coil Bind 0.760"
Retainer BC2901S
Valve Seal BC3991
Net Cam Lift 0.430" w/BC3991 Seal

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