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Yella Terra

Delete Item ST2031A

Delete Item ST2031A

ST2031A
Regular price $9,999.99 AUD
Regular price Sale price $9,999.99 AUD
Sale Sold out
Tax included. Shipping calculated at checkout.

Street Terra

The best value rocker arm on the market today. Engineered to meet or exceed the needs of performance street and sportsman race applications.

Our vacuum die cast arm is designed and engineered for optimum strength without the costs associated with billet CNC machining. The Street Terra series utilises the extreme duty hardware from our premium Platinum race series - ensuring a lifetime of trouble free performance. Our easyfit (EF) kits are a cost effective alternative for factory stamped steel rocker arms, which can be installed within less than an hour without cylinder head removal and in most cases without machining.

Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft… a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift.

Popular amongst standard rebuilds where OEM equipment is worn and or scarce, as well as mild street applications.

Why Choose Street Terra?

  • Vaccuum die cast arms built to withstand 450lbs* max open spring pressure
  • Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
  • Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.
  • Stud mount also available.
  • Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
  • Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance.

Tech Spec

PART NO ST 2031A
BRAND STREET TERRA
APPLICATION FACTORY REPLACEMENT/STREET
MAX OPEN SPRING PRESSURE
450lbs
MAKE HOLDEN
ENGINE HOLDEN 173, 202 
MOUNTING STYLE SHAFT MOUNT
ROCKER ARM RATIO 1.5
STUD SIZE 5/16" w/ 7/16" ADAPTOR
ADJUSTABLE/HYDRAULIC ADJUSTABLE
ROCKER ARM STYLE FULL ROLLER
ROCKER MATERIAL ALUMINIUM
ROCKER ARM BODY STYLE VACUUM DIE-CAST
ROCKER ARM NUT STYLE CAP SCREW
MAX SPRING DIAMETER 1.437"
INLET OFFSET NO
QTY SET OF 12
NOTE EASY FIT



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  • Quality Brands

    We only sell quality genuine products - with brand names you can trust, you know that you are getting the best products for your build complete with limited manufacturers warranty

  • Fast & Efficent

    We use a number of great couriers to get your parcel to you ASAP! In a rush? Give us a call and ask about an 'expedited order' or enquire on current ETAs!

  • Zero Regret - Hassle Free Returns

    We accept returns for up to 30 days, our returns are hassle free when following our return guidelines and policies and most items can even come back on our capped price Australia Post returns, making it a cost effective process to send your item back if it's not quite right.

  • Experienced Team

    Our team are all passionate about the Automotive Industry and involved with lots of avenues of Motorsports. We have mechanics, engine builders and die-hard enthusiasts here to answer your questions or give you expert advice for your ride - just give us a call!

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