SBC 4.155″ PISTONS +2cc DOME 3.750″ ST 6.000″ ROD 1.125″ CH

Description

This race proven hollow
dome forging is our newest
design for sprint car
applications. These pistons
are designed to work with
most of the new 15°
chamber designs. These
pistons have deep valve
reliefs to accommodate
oversized valves and long
duration, tight lobe
separation cams. Accepts
1/16, 1/16, 3/16 rings. These
pistons utilise hollow dome
dedicated left and right hand
forgings.

Includes:

• Pin
  #927-2750-15-51S(130g)
• Double spiro locks
  #927-042-CS
• Contact
  reduction grooves

Specifications
:

• Part #: J170767
• CID:
  407
• Bore: 4.155
• Stroke: 3.750
• Rod Length: 6.000
• Block Height: 9.000
• Compression Height: 1.125
• Compression Ratio with
  50cc chamber volume: 15.4
• Compression Ratio with
  54cc chamber volume: 14.5
• Compression Ratio with
  58cc chamber volume: 13.7
• Dome Volume: 2.0cc
• Gram Weight: 464
• Footnote: Oil Rail Support is
  Included
• Oversize:
  .030
• Recommended Ring
  Set (Check Proseal listing to
  determine oil ring tension):
  J10008-4155-5

With over 60 years of
experience, JE Pistons is the
leader in high performance
forged pistons. We’ve built a
reputation that the
competition can only follow.
JE has a history of
manufacturing the highest
quality pistons and
components that professional
engine builders, race teams,
and high performance
enthusiasts trust and rely
on.

The top engine
builders in NASCAR, ALMS,
NHRA, AMA Supercross and
others choose JE Pistons over
any other brand. For over 60
years, JE’s position at the
forefront of performance
piston manufacturing has been
a result of continuous
research and development of
unique materials, piston
designs and technologies.
Utilising State-Of-The-Art
CNC machines for
manufacturing along with
purpose-designed forgings, JE
is able to maintain exacting
specifications on each and
every piston and hold
tolerances to millionths of
an inch. Also available from
JE is industry-leading
processes like Ultra Crown, a
Digital Three Dimensional
piston crown machining
process and Finite Element
Analysis (FEA). FEA is a
computer process whereby
stress and fatigue are tested
on a computer model before it
goes into production. JE is
the only performance piston
manufacturer to earn the
QS-9000 quality standard
which confirms that JE
provides customers the
highest standards in quality
control. In addition, we also
have State-Of-The-Art
inspection equipment and
testing equipment which
enables us to constantly
bring you, the customer, the
very latest in piston design
configurations.