Macs Products

Each header is cutsom fit to the specific engine and includes flexible connector* and tie straps.

/.10 size are 7/32" less/ - /.20 size are 1/16" less/
/.90-3.2 are 1/16" more/ - /3.0-up are 1/8" more/

(Marine Headers are the same as standard Headers, but angling up out of a boat at 15° / 'degrees' or on a high wing airplane angling down - under the wing at 15° / 'degrees')

Engine(s) Fitted Price Stock #

standard long ex-long 15° marine

.10-.15 Engines ( 9/16"od Alum. tubing - 1/2"id Silicone tubing)

O.S. .10-.18 CV,FP,LA&FSR
K&B .18
Magnum XLS.15
MDS .18 FS Pro
Thunder Tiger GP .10-.15
(screws 4/40 x 1 1/2" fillister head)
(center to center = 27.43mm/1.080") 24.95 2040 2041 2042 2043

.20-.36 Engines ( 5/8"od Alum. tubing - 1/2"id Silicone tubing)

MVVS .20 27.95 2260 2261 2262 2263

Irvine .20 2270 2271 2272 2273

O.S. .20-.25 FP & LA
Magnum .21-.28 GP
Thunder Tiger GP .25
Super Tiger G .34 (bolt-through)
(screws 5/40 x 1 1/2" socket head)
(center to center = 32.11mm/1.264") 2300 2301 2302 2303

O.P.S. 3.5 (.21)
Norvel .25 BB 2310 2311 2312 2313

O.S. .21-.36 FS-SF-FX-SX-AX
(for OS.20-.25 FP or LA see #2300)
Enya .21CX, SS30, 35X-TN & 35XS
Evolution .36 NT
GMS 2000 ABC .25-.36
Jett .25-.35
Kyosho .32-.36 GT
Magnum XLS.25 & .25-.28 Pro
MDS .28-38 FS Pro
Thunder Tiger Pro .25-.36
Webra .25-.36 Speed
(screws 5/40 x 1 1/2" socket head)
(center to center = 35.05mm/1.380") 2340 2341 2342 2343

Super Tiger S .21-.34K (bolt on) 2360 2361 2362 2363

.35-.55 Engines ( 3/4"od Alum. tubing - 5/8"id Silicone tubing)

Enya .40 X & CX
O.P.S. .40 28.95 2420 2421 2422 2423

Enya .40 SS 2430 2431 2432 2433

Enya 40XZ-TN & 40XZS (see-#2650) - - - -

Jett .40-.50 (not the 40L)
H.B. .40 2490 2491 2492 2493

K & B .40 (bolt through) 2530 2531 2532 2533

K & B .45 Sportster & .48 2540 2541 2542 2543

MVVS .40 2550 2551 2552 2553

Norvel AX .40 (see-#2800) - - - -

O.S. .40-.45 FSR
ASP .40
Fox .45, & .50 BBRC
Irvine .40 (bolt on) 2580 2581 2582 2583

O.S..40-.46 FX,SF (bolt through)
O.S..46-.55 AX, .50 SX
ASP .46 Evolution.40-.46 NT
& .46NX, .52NX, .60NX & TrainerA
GMS 2000 ABS .40 & .47
Magnum XLS .46-.52
MDS .40-.48 FS Pro
Mecoa .40-.46
Rossi .45-.53 (new)
Royal .46
Tower .46 (bolt through)
Thunder Tiger Pro .40-.46
(screws 5/40 x 1 1/2" socket head)
(center to center = 37.08mm/1.460") 2590 2591 2592 2593

Rossi .40,.45&.53 (bolt-on)
Powerhouse .40-.45
(Won't fit the new Bolt-Through motors) 2600 2601 2602 2603

Super Tiger GS .40-.45-.51
Como .40-.51 (bolt through) 2620 2621 2622 2623

Super Tiger S .40-.45
Como .40-.45 (bolt on) 2630 2631 2632 2633

Webra .40-.55 Speed
(bolt through) 2640 2641 2642 2643

O.S. .40-.46 FP & LA
Enya 40XZ-TN & 40XZS
Jett .40L
Magnum .40-.44GP
ThunderTiger GP .42 & .46
Webra .40 RC (non-Speed)
(screws 4/40 x 1 1/2" fillister head)
(center to center = 35.05mm/1.380") 2650 2651 2652 2653

Webra .40 Speed (old strap) 2660 2661 2662 2663

YS .45 SF 2670 2671 2672 2673

.50-.75 Engines ( 3/4"od Alum. tubing - 5/8"id Silicone tubing)

Enya.45-.50SS & .50CX
&.61CX NT & CXS PRO 29.95 2710 2711 2712 2713

H.P. .61
Webra .61 Speed (old strap) 2730 2731 2732 2733

Fox .60 Eagle III
Irvine .61 2750 2751 2752 2753

K & B .61
Jett .60 L(not the .65, .67L or .76L)
H.B. .61
Webra .61 BH 2770 2771 2772 2773

K & B .65 Sportster 2780 2781 2782 2783

Kraft .61
RJLK .61
Y.S. .61 long
(Norvel AX .40) 2800 2801 2802 2803

Moki .60 2810 2811 2812 2813

MDS .58 FS Pro 2820 2821 2822 2823

O.S. .50 FSR & .61 FSR
ASP .61
Enya 60X
MVVS .61-.77
Webra Speed .61-.70 F (bolt on) 2850 2851 2852 2853

O.S. .61 FX & SF, .75 AX
O.S. .60 FP & LA, .65 LA
Evolution .61NT & .61NX
(will not fit the .60NX - see #2590)
GMS 2000 ABC .61 (not the .76
or the .61 ringed, the new ringed .61
is a bolt-on not a bolt through
see #2890 - #2893)
Jett .67L & .76L (not the .60L or .65)
Magnum XLS.61 & .61 Pro
MDS .68-.78 FS Pro
Rossi .60-.65 (new)
ThunderTiger GP & Pro .61
Webra .61-.75 P5-H (bolt through)
(screws 8/32 x 1 3/4" fillister head)
(center to center = 42.06mm/1.656") 2860 2861 2862 2863

Rossi .61 & .61
Powerhouse .60 (bolt on)
(Won't fit the new Bolt-Through motors) 2870 2871 2872 2873

Tower .61 & .75
GMS 2000 .61 ringed
GMS 2000 .76A 2890 2891 2892 2893

Super Tiger G .60, S .61-.75
Jett .65 (not the .60L, .67L or .76L)
Como .61-.75 (bolt through) 2900 2901 2902 2903

Super Tiger S .61 K, .75 K (bolt on) 2920 2921 2922 2923

Y.S. .60 (non long-stroke) 2930 2931 2932 2933

for tuned pipes for airplanes see Aero-Tuned Pipes
for tuned pipes for boats & helicopters see Marine & Helo-Tuned Pipes
Also see Special Application Headers

Engine(s) Fitted Price Stock #

standard long ex-long 15° marine

.90-1.20 Engines ( 7/8"od Alum. tubing - 3/4"id Silicone tubing)
(+PLEASE Note! MACS headers are not designed to support the tuned pipe
or in-line muffler that they connect to the motor they are attached to.)

O.S. .90-1.08 FSR (old three bolt) 37.95 2940 2941 2942 2943

MVVS .91 - 1.08
ASP .90-1.08
Magnum .90-1.08 (Bolt-On!)
(same bolts,4mm & pattern,1.335"
as the OS.61 FSR) 2960 2961 2962 n/a

Super Tiger G 90
Jett .90-1.20 (bolt through) 2970 2971 2972 2973

O.S. 91 FX, SX& SZ .95 AX
ASP .91
Magnum .91 Pro
Webra .91 P5 & i (bolt through)
(screws 8/32 x 1 3/4" fillister head)
(center to center = 42.06mm/1.656") 2980 2981 2982 2983

Y.S. .90 &.91 SR, .91 ST (Bolt-On) 2985 2986 2987 n/a

O.S. 120 AX 2990 2991 2992 2993

1.2-1.5 Engines ( 7/8"od Alum. tubing - 3/4"id Silicone tubing)
(+PLEASE Note! MACS headers are not designed to support the tuned pipe
or in-line muffler that they connect to the motor they are attached to.)

Irvine 120-150 44.95 4050 4051 4052 n/a

ASP 120
Evolution 100 NT
Magnum XL 120 4070 4071 4072 n/a

Super Tiger G 2300 4090 4091 4092 n/a

Thunder Tiger 120 Pro 4100 4101 4102 n/a

Webra 120
Bully 1.2 PR
GMS 2000 120
Mark 135
MDS 148
MVVS 215
UAV 120 4130 4131 4132 n/a

Zenoah G-20,G-23,G-26
Homelite 25 4150 4151 4152 4153

1.5-3.2 Engines ( 7/8"od Alum. tubing - 3/4"id Silicone tubing)
(+PLEASE Note! MACS headers are not designed to support the tuned pipe
or in-line muffler that they connect to the motor they are attached to.)

Evolution 26cc
MVVS 1.6 50.95 4220 4221 4222 n/a

Moki 1.5-1.8-2.1
Mark 1.5-1.8-2.1 4230 4231 4232 n/a

Sachs Dolmar 2.0
Brison 2.4 4270 4271 4272 n/a

Sachs Dolmar 2.6-3.2 ci
Brison 3.2 4280 4281 4282 n/a

Super Tiger S 2000,2500,3000,3250 4300 4301 4302 n/a

O.S. 3500, 160
Super Tiger S 4500 4310 4311 4312 n/a

3 W 35cc & 70-80cc Twin
(3W41i, 3W50i, 3W85i, 3W100i, 3W40,
3W 70B2-These are unverified ) 4360 4361 4362 n/a

ZDZ 40 (2.4) 4380 4381 4382 n/a

Zenoah 445 Twin & GT-80 4400 4401 4402 n/a

Zenoah G-45 4420 4421 4422 n/a

3.0-4.8 Engines ( 1"o.d. Alum. tubing )
(*flex connector not included - see our NEW "Ultra-Pure Silicone Tubing")
(+PLEASE Note! MACS headers are not designed to support the tuned pipe
or in-line muffler that they connect to the motor they are attached to.)

Quadra 52cc 56.95 4460 4461 4462 N/A
Sachs Dolmar 3.7 - 4.2
Brison 4.2
Fox 150 4480 4481 4482 N/A

3 W 35cc & 70-80cc Twin
(3W41i, 3W50i, 3W85i, 3W100i, 3W40,
3W 70B2-These are unverified ) 4510 4511 4512 n/a

3 W 60cc & 120cc Twin
B.D. 5.1 Twin
ZDZ 50 (3.0) 4520 4521 4522 N/A

Webra 4.4 Bulli
Celti Husky 4.2
A/3 (A*A*A) 4.4 - 8.8
JPX 8.4 - 8.8
(for the Mahle case) 4540 4541 4542 N/A

Zenoah Q G-62 4560 4561 4562 N/A

4.5-up Engines ( 1"o.d. Alum. tubing )
(*flex connector not included - see our NEW "Ultra-Pure Silicone Tubing")
(also available in custom 1 1/8 o.d. Alum. tubing - call)
(+PLEASE Note! MACS headers are not designed to support the tuned pipe
or in-line muffler that they connect to the motor they are attached to.)

Herbrandson 217 & 280 65.95 4600 4601 4602 N/A
Herbrandson 280 (1 1/4 tube) 80.95 4610 4611 4612 N/A

Husky 6.0
Celty Husky 5.8 65.95 4620 4621 4622 N/A

Sachs Dolmar 5.8
Fox 200 4660 4661 4662 call-!

BME 58/116 Xtreme
BME 50 Classic 4670 4671 4672 N/A

+ - Please note MACS headers are not designed to support the Tuned Pipes or In-Line muffler that are connected to them. They (the Tuned Pipe or In-Line Muffler) must be self- supported. MACS Products will not replace or repair headers used in this manner.
! - This header is available in an Extra-Extra-Long - for info. contact us.
for tuned pipes for airplanes see Aero-Tuned Pipes
for tuned pipes for boats & helicopters see Marine & Helo-Tuned Pipes
NEW!! Also see Special Application Headers

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Macs Products
7935A Carlton Rd.
Sacramento, CA 95826