O.S. Speed Adam Drake 4 (AD4) Engine/75mm Header/TB02-2090SC Pipe Combo Set
Price range: $645.00 through $695.00
O.S. Engines would like to introduce new O.S. SPEED B21 ADAM DRAKE 4. Latest collaboration engine with world famous O.S. Team driver Adam Drake. Cylinder liner, crankshaft, outer head has been redesigned to Adam Drake’s spec for better balance, more torque and more power for better driving performance.
Newly designed cylinder liner uses 3 port design. Changing the exhaust dimension for more torque. Changed crankshaft’s inner diameter for better response in low to middle range.
New outer head has double anodized black and blue with new laser design and at same time lighter and better balance compared to the previous model. Inner head’s combustion chamber has been redesigned combustion efficiency has been improved, resulting in more torque. Comes with 6.0 and 8.0 blue anodized reducers
- Description
- Additional information
Description
This engine is a refined version of the previous model, developed in collaboration with world-renowned Adam Drake. The cylinder liner features a new 3-port design with revised port geometry. Additionally, modifying the crankshaft bore diameter has improved low-to-mid-range response. The new outer head features a two-tone anodized finish, with the machined section anodized in blue—ADAM DRAKE’s signature color—and incorporates a new laser design. It has been reborn as the O.S. SPEED B21 ADAM DRAKE EDITION 4, offering an advantage on the race track.
Specifications
Displacement: 3.49 cc / 0.213 cu.in.
Bore: 16.4mm / 0.646 in.
Stroke: 16.55mm / 0.652 in.
Output: 2.65 ps / 2.61 hp / 34,000 r.p.m.
Operating RPM Range: 4,000-42,000 r.p.m.
Weight: 352g / 12.42 oz.
Standard Included Items—————————
Glow plug O.S. SPEED T-P3 1 piece
Reducers 6,8
Exhaust seal ring 1 piece
Dust cap 3, 16, 18 1 each
Additional information
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| EBIS Break In Option | EBIS Break in, No EBIS Break in |
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FEATURED PRODUCTS
Engine Break In Service
Sleeve Resizing Service
