Skunk2 2020+ Toyota GR Supra (MK5) / 2019+ BMW Z4 B58 Ultra Series Stage 1 Camshafts

305-14-1000

/// FEATURES
• Billet 8660 Alloy Steel Camshafts
• Improved Efficiency/Power
• Widest Possible Power Band
• Smooth Driveability & Idle
• Retains Double VANOS +
Valvetronic Functionality

PART NUMBER DESCRIPTION MSRP MAP
305-14-1000 Skunk2 Ultra Series Stage 1 Camshafts for Toyota Supra MK5/BMW B58 $1,545.00 $1,471.43
313-14-1000 High Lift Valve Springs and Titanium Retainers for Toyota Supra MK5/BMW B58 $999.99 $949.99
*Prices subject to change without notice.
/// ENGINEERING
Skunk2 Ultra Series Stage1 Camshafts for Toyota Supra MK5/BMW
B58 significantly increases engine efficiency and power output by
utilizing advanced lobe profile designs that retain full Valvetronic
and Double VANOS functionality, which ensures the widest possible
powerband with smooth drivability and idle. For the ultimate in
precision and strength/rigidity†

Skunk2 Ultra camshafts are machined
from forged solid 8660 alloy steel blanks that are then rifle drilled,
induction hardened, and CNC precision ground.
Expect gains of 6% to 10% from 3,500rpm to redline with
approximate gains of 100hp and 100lb-ft at 40psi boost pressure.
Though Ultra Stage1 cams are compatible with stock OEM valve
springs, we recommend the use of Skunk2 upgraded High Lift Valve
Springs along with Titanium Retainers (PN: 313-14-1000) for the B58
as long term durability using stock valve springs is unknown.
†
When pushing performance, all OEM B58 camshafts are prone to bend due to the thin cam barrels designed to
save weight and cost. Skunk2 Ultra Camshafts are made from high strength alloy steel and feature a thick-wall
barrel design to better resist camshaft flex.

/// SPECIFICATIONS

/// OEM VS S2 ULTRA STAGE 1 VS COMPETITION @ 15PSI
LIFT
DURATION

0.410” / 10.41mm
227 ̊ @ 0.050” / 1.3mm
234 ̊ @ 0.039” / 1.0mm
277 ̊ @ 0.004” / 0.1mm
INTAKE CAMSHAFT

LIFT
DURATION

0.425” / 10.79mm
245 ̊ @ 0.050” / 1.3mm
252 ̊ @ 0.039” / 1.0mm
295 ̊ @ 0.004” / 0.1mm
EXHAUST CAMSHAFT

OEM Camshafts Competition Camshafts

*Horsepower gains will increase in proportion to boost.

Skunk2 Ultra Series Stage 1 Camshafts

/// FITMENTS
M240i (G42) 2022 -
M340i (G20) 2019 -
M440i (G22) 2021 -
540i (G30 LCI) 2020 -
540i 48V (G30) 2021 -

740i 2020 -
740i 48V 2021 -
840i 2018 -
840i 48V 2021 -
X3/X4 M40i 2020 -

X5/X6/X7 40i 2019 -
Z4 M40i 2019 -
A90/MK5 Supra ALL